These are among the designs of collectible “challenge coins” that have been offered for sale to Louisville Metro Police officers through internal department-wide emails in recent years.

The Port Authority of Guam unveils its challenge coin honoring its workforce in a ceremony held within the CFS Warehouse on July 18, 2024.

Built with a magnetic lock and fingerprint sensor, this real-life version of Thor’s hammer can only be lifted by its creator. Science meets superhero in this wild engineering challenge.

Chris Lindenberger, a part-time engineering and machining instructor at Front Range Community College’s Boulder County campus, is making military challenge coins for the college’s veterans ...

These are among the designs of collectible “challenge coins” that have been offered for sale to Louisville Metro Police officers through internal department-wide emails in recent years.

As the crowd filled the Great Hall to near-capacity and the games emitted familiar bleeps and bloops, one sound familiar to old school arcade veterans was not heard—the clinking of coins. "The best ...

An ArkLaTex doctor is using challenge coins to honor his patients who are veterans. “Well, one of the things is ‘thank you for your service.’ But the other thing is it’s a little more than a thank you ...

This screenshot from Facebook shows the Cyber Awarness Challenge-inspired challenge coin created by Army 2nd Lt. Michael Moser, a Signal Corps officer. (Facebook) ...

UC Santa Cruz undergraduate computer engineering student Astra Tsai. (photo by Juliette Vazquez) For the second year in a row, UC Santa Cruz undergraduate computer engineering student Astra Tsai was ...

Challenge coins are a long-held tradition in the military, something one Williamsburg man knows a little bit about.

REDMOND, Ore. (KTVZ) -- The Williams family stopped by the Redmond Police Department on Monday with a box of challenge coins for every officer, to show appreciation for their help after a serious ...