The Royal Hospital, Chelsea: aerial view of the building and grounds, looking from the Surrey side of the river. Engraving… https://www.rawpixel.com/image/13975920/image-person-art-skyFree Image from public domain licenseA utility landing craft from the Dutch navy ship Hr. Ms. Johan De Witt (L 801) participates in an amphibious assault demo… https://www.rawpixel.com/image/8728427/photo-image-public-domain-boatFree Image from public domain licenseU.S. Army Special Troops Battalion, HQ and A Co. from Fort Jackson perform the 21-Gun Salute with M1A1 Howitzers during the… https://www.rawpixel.com/image/4043421/photo-image-smoke-personFree Image from public domain licenseThe mine countermeasures ship USS Guardian (MCM 5) sits aground on the Tubbataha Reef in the Sulu Sea, western Philippines… https://www.rawpixel.com/image/3318068/free-photo-image-battleship-boat-cc0Free Image from public domain licenseThe iron sights of a M2 .50 caliber machine gun as seen from behind the gun during heavy weapons training at Fort Jackson… https://www.rawpixel.com/image/4043567/photo-image-public-domain-roadFree Image from public domain licenseKeeping the airliner air-conditioned while it is one the ground. Municipal airport, Washington, D.C.. Sourced from the… https://www.rawpixel.com/image/12279445/photo-image-sky-airplane-roadFree Image from public domain license[Untitled photo, possibly related to: A ground crew assistant removing the block from the rudder preparatory to the plane's… https://www.rawpixel.com/image/12279672/photo-image-person-sky-planeFree Image from public domain licenseU.S. Marines with the 1st Battalion, 6th Marine Regiment, Marine Air-Ground Task Force-5 (MAGTF), integrated with the 3rd… https://www.rawpixel.com/image/8727779/photo-image-public-domain-person-natureFree Image from public domain licenseBar Harbor, Maine. Civil Air Patrol base headquarters of coastal patrol no. 20. Ground crew working on a patrol plane in the… https://www.rawpixel.com/image/12295637/photo-image-person-plane-public-domainFree Image from public domain licenseU.S. Marines with the 2nd Battalion, 7th Marine Regiment, Special Purpose Marine Air Ground Task Force - Crisis Response -… https://www.rawpixel.com/image/8727927/photo-image-airplane-public-domain-peopleFree Image from public domain license[Untitled photo, possibly related to: A ground crew assistant removing the block from the rudder preparatory to the plane's… https://www.rawpixel.com/image/12279685/photo-image-sky-plane-animalFree Image from public domain licenseU.S. Marines with Marine Medium Tiltrotor Squadron 364 fly MV-22B Osprey tiltrotor aircraft during air-to-ground helicopter… https://www.rawpixel.com/image/8727768/photo-image-airplane-public-domain-birdFree Image from public domain licenseA ground crew assistant removing the block from the rudder preparatory to the plane's taking off. Municipal airport… https://www.rawpixel.com/image/12279457/photo-image-face-person-skyFree Image from public domain licenseBar Harbor, Maine. Civil Air Patrol base headquarters of coastal patrol no. 20. Ground crew mechanic working on a patrol… https://www.rawpixel.com/image/12295920/photo-image-person-plane-public-domainFree Image from public domain licenseGround crew getting a plane ready to take off on a rainy day at municipal airport in Washington, D.C.. Sourced from the… https://www.rawpixel.com/image/12262476/photo-image-person-plane-public-domainFree Image from public domain licenseU.S. Marines with Headquarters Battalion, 1st Marine Division conduct a security patrol during Exercise Desert Scimitar at… https://www.rawpixel.com/image/8727790/photo-image-public-domain-person-gunFree Image from public domain license[Untitled photo, possibly related to: Ground crew assistants leaving a plane about to take off at the municipal airport in… https://www.rawpixel.com/image/12263597/photo-image-person-plane-public-domainFree Image from public domain licenseBar Harbor, Maine. Civil Air Patrol base headquarters of coastal patrol no. 20. Ground crew mechanic working on a patrol… https://www.rawpixel.com/image/12295681/photo-image-person-plane-public-domainFree Image from public domain licenseGloucester, Massachusetts - Heavy nets slide down Old Glory's side at fishing grounds off the New England coast where… https://www.rawpixel.com/image/12296467/photo-image-person-sky-public-domainFree Image from public domain licenseU.S. Marines and members of the Japan Ground Self-Defense Force watch as the MV-22 Osprey takes off Aug. 18, 2017, in… https://www.rawpixel.com/image/8727835/photo-image-airplane-public-domain-peopleFree Image from public domain license[Untitled photo, possibly related to: Bar Harbor, Maine. Civil Air Patrol base headquartes of coastal patrol no. 20. Ground… https://www.rawpixel.com/image/12295667/photo-image-sky-airplane-public-domainFree Image from public domain licenseA Polish Air Force C-130E cargo aircraft flies over Warsaw, Poland, during the country’s Armed Forces Day festivities, Aug.… https://www.rawpixel.com/image/8728352/photo-image-airplane-public-domain-natureFree Image from public domain license