Group of students around a table studying. View public domain image source here https://www.rawpixel.com/image/8809342/photo-image-paper-women-public-domainFree Image from public domain licenseAn aerial shot of brightly-colored jigsaw puzzle pieces. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286275/free-photo-image-pattern-puzzle-toyFree Image from public domain licenseMembers of the Kennedy Space Center government-industry team rise from their consoles within the Launch Control Center to… https://www.rawpixel.com/image/1207195/moon-landing-photographFree Image from public domain licenseU.S. Army Sgt. Georgia Varoucha, a Recruiter with the New Jersey National Guard, kicks a soccer ball while practicing in… https://www.rawpixel.com/image/3578314/free-photo-image-army-national-guard-athleteFree Image from public domain licenseFree baseball on clay field close up image, public domain sport CC0 photo. https://www.rawpixel.com/image/5922412/photo-image-public-domain-free-sportsFree Image from public domain licenseRescue operations during the aftermath of the September 11 terrorist attack on the World Trade Center, New York City.… https://www.rawpixel.com/image/3978607/photo-image-smoke-people-cityFree Image from public domain licenseFrom left, U.S. Air Force Lt. Col. Richard Degrosa, an emergency room doctor; Lt. Col. Gerald Fortuna, a trauma surgeon; and… https://www.rawpixel.com/image/3317609/free-photo-image-doctor-4th-combat-camera-squadron-aeltFree Image from public domain licenseChildren play football next to an IDP camp in Mogadishu, Somalia, on August 19. https://www.rawpixel.com/image/3373144/free-photo-image-people-africa-football-refugeeFree Image from public domain licenseProfessional Packaging Systems' Quality Packaging (Qual Pac) Forklift Driver Guadalupe Flores is proud to be a part of the… https://www.rawpixel.com/image/3306971/free-photo-image-forklift-factory-worker-truckFree Image from public domain licenseKellan Christensen, left, a junior at the University of Denver, and U.S. Air Force Academy Cadet Jake Jones jump to head the… https://www.rawpixel.com/image/3317739/free-photo-image-football-soccer-ballFree Image from public domain license"Elk Bath" – A wildfire on the East Fork of the Bitterroot River on the Sula Complex in the Bitterroot National Forest in… https://www.rawpixel.com/image/8718186/photo-image-fire-trees-public-domainFree Image from public domain licenseProfessional baseball game at the Rogers Centre, home of the Toronto Blue Jays. Original public domain image from Wikimedia… https://www.rawpixel.com/image/3282607/free-photo-image-baseball-team-sport-public-domainFree Image from public domain licenseColorado Rockies major-league baseball game at Coors Field in Denver, Colorado. Original image from Carol M.… https://www.rawpixel.com/image/3090938/free-photo-image-sport-baseball-americaFree Image from public domain licenseU.S. Secretary of Agriculture Sonny Perdue tour of Keeneland Race Track included views of horse race activities and… https://www.rawpixel.com/image/3306782/free-photo-image-polo-race-sportsFree Image from public domain licenseThe 1950s historical photograph of the inside of an operating room suite during a surgical procedure. https://www.rawpixel.com/image/2288484/free-photo-image-surgery-doctor-medicalFree Image from public domain licenseA female soccer player dribbles a ball during a training session for Golden Girls Football Club in Mogadishu, Somalia on… https://www.rawpixel.com/image/3373122/free-photo-image-soccer-soccer-player-africaFree Image from public domain licenseGroup of people playing ice hockey with one net on a frozen surface in a suburb. Original public domain image from Wikimedia… https://www.rawpixel.com/image/3283005/free-photo-image-hockey-people-and-landscapeFree Image from public domain licenseA young Somali girl holds a basketball during a practice session in Mogadishu on June 6. Banned under the extremist group… https://www.rawpixel.com/image/3373149/free-photo-image-refugee-africa-girl-africa-happy-smiling-womanFree Image from public domain licenseCavalry scouts with the 1st Battalion, 16th Infantry Regiment, 1st Armored Brigade Combat Team, 1st Infantry Division… https://www.rawpixel.com/image/3317614/free-photo-image-nature-1-16-16th-infantry-regimentFree Image from public domain licenseBattling the Blaze. Marines battle a huge blaze during a pit fuel fire training exercise at the burn pit on Marine Corps Air… https://www.rawpixel.com/image/3579022/free-photo-image-incident-accident-careerFree Image from public domain licenseU.S. Marines with Special Purpose Marine Air-Ground Task Force-Crisis Response-Africa (SPMAGTF-CR-AF) 19.1, Marine Forces… https://www.rawpixel.com/image/3315422/free-photo-image-airplane-security-aircraftFree Image from public domain licenseResearch team at Katmai National Park and Preserve,Alaska. Original public domain image from Flickr https://www.rawpixel.com/image/4031791/photo-image-flower-people-natureFree Image from public domain licenseU.S. Air Force Master Sgt. Linn Knight (lane 5), an explosive ordnance disposal troop from Spring Branch, Texas, races… https://www.rawpixel.com/image/3315411/free-photo-image-sports-team-swimmingFree Image from public domain licenseUniversity of Alabama Football match. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/3094380/free-photo-image-football-stadium-crowdFree Image from public domain licenseTwo U.S. Air Force F-16C Fighting Falcons from the New Jersey Air National Guard's 177th Fighter Wing fly over Yankee… https://www.rawpixel.com/image/3578753/free-photo-image-stadium-afbday-air-national-guardFree Image from public domain licenseA high-angle shot of a crowded beach in the summertime. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285944/free-photo-image-summer-travel-birdFree Image from public domain licenseInto the Wild Blue. Marines jump out of the back of a KC-130J Hercules while conducting aerial delivery training during… https://www.rawpixel.com/image/3579011/free-photo-image-2012-adventure-aerialFree Image from public domain licenseVolunteers portraying astronauts are transported to ambulances as part of a Mode II-IV evacuation simulation exercise at… https://www.rawpixel.com/image/440986/paramedics-transporting-astronautsFree Image from public domain licenseTwo women walk past the huge cavity where one of the ancient Buddhas of Bamiyan, known to locals as the "Father Buddha,"… https://www.rawpixel.com/image/8717903/photo-image-public-domain-women-personFree Image from public domain licenseA shoelace serves as a tether between a visually impaired runner and his lane guide at the 2015 Department of Defense… https://www.rawpixel.com/image/3388518/free-photo-image-people-arms-2015-department-defense-warrior-gamesFree Image from public domain licenseHockey fans were treated to a close game Feb. 16, 2019. Original public domain image from Flickr https://www.rawpixel.com/image/4032024/photo-image-people-sportsFree Image from public domain licenseAir National Guard on duty. Original public domain image from Flickr https://www.rawpixel.com/image/3578711/free-photo-image-air-guard-national-careerFree Image from public domain licenseMan holding a baseball bat. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286120/free-photo-image-stadium-night-batFree Image from public domain licenseEstonian Air Force firefighters combat a simulated aircraft blaze during Northern Strike 19 at the Alpena Combat Readiness… https://www.rawpixel.com/image/3578818/free-photo-image-air-force-guard-nationalFree Image from public domain licenseFree men playing a soccer game on field image, public domain sport CC0 photo. https://www.rawpixel.com/image/5925695/photo-image-public-domain-green-peopleFree Image from public domain licenseMilitary service members honored during Chicago bears game https://www.rawpixel.com/image/3577717/free-photo-image-football-2015-tec-best-warrior-416thFree Image from public domain licenseBoy at Bat in a Softball Game in Hiland Park of Brooklyn, New York City. 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Free public domain CC0 photo. https://www.rawpixel.com/image/6029907/photo-image-public-domain-technology-personFree Image from public domain licenseMembers of the Los Angeles County Fire Department Search and Rescue Team rescue a Haitian woman from a collapsed building in… https://www.rawpixel.com/image/3317748/free-photo-image-rescue-accident-cc0Free Image from public domain licenseFootball player playing on green grass field. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3336897/free-photo-image-sports-keep-fit-playerFree Image from public domain licenseUnited States Women's National Basketball Team play an inter-squad exhibition game at the University of Delaware. Military… https://www.rawpixel.com/image/3388381/free-photo-image-basketball-match-sport-team-womenFree Image from public domain licenseA soldier’s helmet rests on a chair outside a locker room during the 5th Annual Army vs. Air Force Hockey Game, Jan.… https://www.rawpixel.com/image/4031982/photo-image-sport-public-domainFree Image from public domain licenseAn Afghan journalist signs an attendance roster during photojournalism training in Farah, Afghanistan, Feb. 10, 2013. https://www.rawpixel.com/image/3317780/free-photo-image-hijab-people-assistanceFree Image from public domain licenseFootball stadium and packed crowd. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282364/free-photo-image-stadium-baseball-willie-mays-plazaFree Image from public domain licenseRed and white jersey figures on rotating bars of the table soccer at Bornerbroeksestraat 2. Original public domain image… https://www.rawpixel.com/image/3285245/free-photo-image-sports-footbal-team-banisterFree Image from public domain licenseU.S. Sailors fold the American flag in preparation of the amphibious assault ship USS America (LHA 6) leaving Pearl Harbor… https://www.rawpixel.com/image/3315516/free-photo-image-pearl-harbor-american-flagFree Image from public domain licenseU.S. Air Force Academy (USAFA) running back Jon Lee, center, leaps into the end zone for a touchdown during a game against… https://www.rawpixel.com/image/3317653/free-photo-image-sports-football-americanFree Image from public domain licenseCapt. David Culpepper, Commanding Officer, Naval Station Guantanamo Bay, Cuba, surveys a healthy reef off the coast of… https://www.rawpixel.com/image/3317815/free-photo-image-diving-underwater-deep-sea-scuba-diverFree Image from public domain licenseA young Farahi girl stares into the camera at a local returnee and refugee village, Feb. 9. Provincial Reconstruction Team… https://www.rawpixel.com/image/3317702/free-photo-image-afghanistan-armyFree Image from public domain licenseTraining Exercise: Active ShooterPRESIDIO OF MONTEREY, Calif. PHOTO by Steven L. Shepard, Presidio of Monterey Public… https://www.rawpixel.com/image/4040331/photo-image-public-domain-people-womanFree Image from public domain licenseA batter swings at a ball during a historic baseball game being played where uniforms of the period are worn and they follow… https://www.rawpixel.com/image/3306177/free-photo-image-baseball-sports-athleteFree Image from public domain licenseKayla Cureton,Mike Bylund and Jason Condie catch a refreshing wave as April Todd sets them up for the next wave on the… https://www.rawpixel.com/image/4076797/photo-image-public-domain-nature-peopleFree Image from public domain licenseMarines with Company E, Battalion Landing Team 2/4, 11th Marine Expeditionary Unit, use their boots to lift barbed wire… https://www.rawpixel.com/image/3578963/free-photo-image-military-america-armyFree Image from public domain licenseAn African American man shooting a basketball into an outdoor net. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286005/free-photo-image-sports-activity-basketballFree Image from public domain licenseRussian Search and Rescue teams deploy by helicopter from Karaganda, Kazakhstan. Original from NASA . Digitally enhanced by… https://www.rawpixel.com/image/418639/military-helicopterFree Image from public domain licenseA Medical HMMWV from the 2-102nd Cavalry of the New Jersey National Guard's 50th Infantry Brigade Combat Team sits ready to… https://www.rawpixel.com/image/4031830/photo-image-person-work-manFree Image from public domain licenseU.S. Sailors combat a simulated fire during a Damage Control Training Team (DCTT) exercise in the well deck of the… https://www.rawpixel.com/image/3317627/free-photo-image-firefighter-accident-americaFree Image from public domain licenseRay Bane dog standing on 2 legs. Original public domain image from Flickr https://www.rawpixel.com/image/8799478/photo-image-public-domain-person-birdFree Image from public domain licenseSurvey team members Sgts. Joseph Bercovic, right, and Cory Sweetman, both with the New Jersey National Guard's 21st Weapons… https://www.rawpixel.com/image/4031831/photo-image-people-work-manFree Image from public domain licenseA child headers a ball during practice at the FIFA Football Festival in Mogadishu, Somalia, on August 19. https://www.rawpixel.com/image/3373138/free-photo-image-africa-football-academyFree Image from public domain licenseWNBA star Maya Moore drives the lane as the United States Women's National Basketball Team play an inter-squad exhibition… https://www.rawpixel.com/image/3388471/free-photo-image-audience-ball-basketballFree Image from public domain licenseAmerican football stadium with people. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286833/free-photo-image-team-sport-stadium-arenaFree Image from public domain license150815-A-ZA034-205 SANTO DOMINGO, Dominican Republic (Aug. 15, 2015) Sailors, assigned to Military Sealift Command hospital… https://www.rawpixel.com/image/3317670/free-photo-image-soccer-american-football-athleteFree Image from public domain license