Knowing the U.S. military, rather than addressing the root cause of the issue (namely: the totally senseless cult of sleep deprivation in the armed forces -- despite the ample research showing the mental and physical damage it causes), they'll start offering, what shall we call them? -- special "performance-enhancing" helmets. First on an optional basis, but then on a not-so-optional basis -- to administer optimally measured voltage, at optimally timed occasions.
From there it's a short hop to having these helmets (by then no longer optional at all) administer other kinds of signals, directly to the soldier's brains: to relay orders, identify targets... and to tell them when to pull the trigger.