Vicenza, Italy, March 30, 2006: Jen Dean greets her husband, Capt. Joel Dean of 2nd Battalion, 503rd Infantry Regiment, 173rd Airborne Brigade, back to Vicenza, Italy.

Archeologists with the National Park Service have found musket balls that date back nearly 250 years and were fired during one of the first battles in the Revolutionary War. The five musket balls, ranging in size from a pea to a marble, are from what is known as the North Bridge fight in Concord, Mass., where for the first time colonial militia leaders ordered members to fire upon government soldiers.

Tikrit, Iraq, May 20, 2010: Men detained during an April 23 security sweep in Tikrit wait behind concertina wire at an Iraqi police station.

Early last year, Scott Stephenson, president and CEO of the Museum of the American Revolution, received a phone call that left him stunned.

Tokyo, April 10, 1961: Princess Michiko admires a fountain built in front of the Tokyo Imperial Palace in honor of her second wedding anniversary.

Livorno, Italy, April 8, 2005: U.S. Army trucks from previous wars are stored outdoors at Field Support Battalion-Livorno, Italy, until they are sold to other governments.

Saturday morning broke hot and muggy, not unlike the day 78 years ago when 25 men climbed about a converted B-17 bomber to fly from Greenland to New York after the end of World War II. But the plane never made it.

Mykolaiv region, Ukraine, July 14, 2018: U.S. and Ukrainian Marines provide security near a Ukrainian BTR-80 armored transporter during a company-level attack at the land portion of Exercise Sea Breeze.