Army Tracers

U.S. Army soldiers assigned to 3rd Battalion, 157th Field Artillery, Colorado Army National Guard, light up the range with tracer rounds as they fire the M-240B medium machine gun with the help of night optics at Fort Hood, Texas, on April 25, 2009.

This photo is public domain.

F/A-18C Hornet

An F/A-18C Hornet assigned to Air Test and Evaluation Squadron (VX) 23 makes one of the first arrested landings aboard the aircraft carrier USS George H.W. Bush (CVN 77).

This photo is public domain.

Donald Mallick, 1910

Donald Mallick, 1910.

This photo is public domain.

Walking the Ocean Floor

This stunning photo is public domain.

US Navy Diver

This photo is public domain.

Turn of the Century Baseball Cards

These images are public domain. Feel free to share and remix these images.

Panoramic view of Deadwood, S. D.

Panoramic view of Deadwood, S. D. in 1902.

This photo is public domain.

American Legion group

American Legion group, photo taken between 1918 and 1928.

This image is public domain.