Skyline of San Diego, Calfornia. Original image from Carol M. Highsmith’s America. Digitally enhanced by rawpixel. Free Photo from public domain license 
Skyline of San Diego, California. Original image from Carol M. Highsmith’s America, Library of Congress collection.… Free Photo from public domain license 
Panda from the San Diego Zoo, a zoo in Balboa Park, San Diego. Original image from Carol M. Highsmith’s America… Free Photo from public domain license 
On the top deck of the USS San Diego, U.S. Navy personnel monitor a helicopter landing after an Orion underway recovery test.… Free Photo from public domain license 
The USS Anchorage is being prepared for the Orion Underway Recovery Test 2. Original from NASA. Digitally enhanced by… Free Photo from public domain license 
On the top deck of the USS San Diego, U.S. Navy personnel monitor a helicopter landing. Original from NASA. Digitally… Free Photo from public domain license 
SAN DIEGO, Calif. – A member of the Helicopter Sea Combat Squadron 8 signals to the pilot in an H60-S Seahawk… Free Photo from public domain license 
NASA's Orion spacecraft floats in the Pacific Ocean after splashdown from its first flight test in Earth orbit. Original from… Free Photo from public domain license 
At the U.S. Naval Base San Diego in California, a tug boat accompanies the USS San Diego as it departs for open seas in the… Free Photo from public domain license 
Cabrillo Statue, San Diego, California. Original image from Carol M. Highsmith’s America. Digitally enhanced by… Free Photo from public domain license