Crane's Beach, a Federally-Protected Dune Preserve, between Essex and Ipswich 02/1973. Photographer: Parks, Deborah.… https://www.rawpixel.com/image/8803167/photo-image-sunset-people-skyFree Image from public domain licenseU.S. Sailors prepare to fire a .50-caliber machine gun during a night-time live-fire exercise on the fantail of the aircraft… https://www.rawpixel.com/image/3318055/free-photo-image-aircraft-airplane-architectureFree Image from public domain license