Flags at half-staff in Colorado to honor fallen Marine Cpl. David M. Sonka of Parker

DENVER - Flags are flying at half-staff across Colorado Thursday in honor of a Parker Marine killed earlier this month in Afghanistan.

Marine Cpl. David M. Sonka, 23, of Parker, was killed along with his K-9 and another Marine during combat operations in Afghanistan May 4. The circumstances of the deaths are still being investigated.

Sonka's funeral was held Thursday morning in Littleton. Interment followed at Fort Logan National Cemetery.

Sonka was a multi-purpose canine handler. He joined the Corps in August 2008, and moved into the Special Operations Command last year.

Sonka attended Military Police School in Ft. Leonard Wood, Mo. Upon graduation he attended the Military Working Dog Handler Basic Course in Lackland Air Force Base, Texas.

Sonka's personal decorations include a Navy and Marine Corps Achievement Medal, Marine Corps Good Conduct Medal and a Combat Action Ribbon.

At Chaparral High School, Sonka was a dedicated wrestling and track athlete.

Chaparral wrestling coach Rodney Padilla said Sonka was a guy who would always step up -- filling in for other teammates at a big tournament

"He had a great work ethic. Never shied away from anything we ever did," Padilla said. "He always did what was supposed to do.  And what do you tell them. You tell the do what you’re supposed to do when you're supposed to do it, someday you'll be able to do what you want to do, when you want to do it."