Star Trek: The Lionhearted Wiki

Gerald Collins was a Human who served in the United Federation Marine Corps as an aviator.

By 2370 he was weapons and sensor officer aboard a reconnaissance fighter, along with Peter Madison.

During a classified mission to scout possible Cardassian build up inside of the newly formed Demilitarized Zone, he activated Madison's ejection unit and stranded him on a nearby planet.  After that, he took the fighter and joined the Maquis.

In 2371 he led a group of Maquis group in an attempt to hijack the USS Lionheart.  ("Party-Crashers")