Those rifle grenade rds in the bandolier are looking like chalk, or "bird scares" the two long ones are most likely parachute flares. The grenades are probably smoke but could be incendiary. If the tips of the bandolier rds were visible I could be sure.
Surefire makes or made a huge similar looking tact light.
http:// static.brightguy.com/images/products/large/SureFire%20UB3T%20Invictus%20Flashlight.jpg