DISPUTANTA - Have you ever heard of challenge coins? Maybe you or someone you know has earned one in recognition of extraordinary service. During a follow-up story interview with Three Brothers' ...

Defense Secretary Robert Gates hands a challenge coin bearing his name to a service member at a forward operating base in Kandahar province, Afghanistan, in 2011. Photo by Jason Reed/Getty Images ...

WASHINGTON — Since Bill Clinton occupied the White House, commemorative medallions known as challenge coins have been stately symbols of the presidency coveted by the military, law-enforcement ...

For two decades, the commander in chief has doled out distinguished-looking coins as personal mementos. Now, the presidential “challenge coin” has undergone a Trumpian transformation. The presidential ...

During a visit to the Pentagon in 1997, Gen. George Joulwan handed sculptor Marty Heffron a challenge coin. In the military, a challenge coin is a small, highly-prized medallion that symbolizes pride, ...