Helping Soldiers Disappear in a Burst of Smoke

When an imminent threat means troops need to move, sometimes the most powerful cover is a smokescreen. Not a figurative smokescreen, but an actual burst of smoke that hides soldiers--and even tanks--from enemy eyes. Commonly created by smoke grenades, these bursts are valuable only as long as the enemy can't see through them. A new type of smoke grenade that can obscure sensors in the visible and infrared ranges burns during a test. Image Credit: US Army. Historically, smoke grenades obscured ma...