Update: U.S. Marine Sgt. Andrew Seif of Holland confirmed dead in Florida crash that killed 11

WARREN, MI -- A Macomb County marine was among the military servicemen presumed killed in a helicopter crash during a Florida training mission Tuesday, according to family members and Warren's mayor.

Multiple news agencies have reported that two other Michigan men may also have been killed in the crash.

The military has not identified the seven marines and four National Guard soldiers who were aboard the Black Hawk helicopter, but has officially changed response operations from rescue to recovery, presuming the servicemen dead after divers found the helicopter wreckage Thursday.

Warren Mayor Jim Fouts ordered city flags flown at half-staff Thursday to honor Marine Marcus Bawol.

Bawol graduated from Warren Mott High School and was on the varsity soccer team, according to the city.

His sister Brandy Peek told the Associated Press that Bawol "loved everything about the military."

"He couldn't wait to join," she said. "He wanted to fight for our country and was always striving to be the best Marine he could be."

The 27-year-old was engaged to be married, family members said.

The helicopter crashed in dense fog Tuesday, and more bad weather Thursday prevented the recovery of bodies, according to the Associated Press.

Multiple news agencies have also named Andrew Seif of Holland and

Trevor Blaylock of Lake Orion among those who were aboard the helicopter.

A relative of Seif said Wednesday he'd been advised not to talk to media.

The cause of the crash was being investigated by the U.S. Army Combat Readiness Center out of Fort Rucker, Alabama, according to the Associated Press.

Kim Urr, who was at a campground near the crash site Tuesday, told the A.P. she heard a metallic sound and then two muffled explosions as the helicopter disappeared into the narrow waterway separating Santa Rosa Island from the Florida panhandle mainland.

Airmen walked the shores of Santa Rosa Sound in dense fog with low visibility Thursday, recovering pieces of clothing and bits of wreckage, A.P. reported.

The U.S. Coast Guard suspended its search Thursday afternoon, and the fog was expected to persist through Friday.