A security forces journeyman assigned to Malmstrom Air Force Base in Montana has died after collapsing while lifting weights.
341st Missile Wing Commander Col. Robert Stanley tells the Great Falls Tribune ( ) that Senior Airman Vincent Sanchez of Downey, Calif., died Sunday evening. He was working out at a missile alert facility when he collapsed. He was provided medical aid on scene, but died before being transported to a Lewistown hospital.
Sanchez, who was 23, entered the Air Force in December 2009 and arrived at Malmstrom in Great Falls in July 2010.
His death is under investigation.

Stanley expressed the unit's condolences to Sanchez's family.