CBSNEWS — Seven U.S. service members have been killed in Afghanistan this year, fighting America’s longest war. The deadliest attack came this month, when a Taliban bomb killed Marine reservists Benjamin Hines, Christopher Slutman and Robert Hendriks.

When Christopher Slutman was killed by a roadside bomb in Afghanistan, he was three weeks away from going home.

READ MORE: Sinkhole Closes Part Of Baltimore's North Avenue Until Further Notice

“Everyone wanted him home. Everyone missed him,” said Kevin McGookin, a fellow firefighter a Marine, who was one of Slutman’s best friends.

READ MORE: Maryland Weather: Storm Threat Triggers Alert Day

This week, people lined overpasses and highways in three states to watch Slutman’s casket ride back from Dover Air Force Base.

MORE NEWS: WATCH IT AGAIN: Fourth Of July Fireworks Light Up Baltimore's Inner Harbor