The tech could make dangerous supply runs through war zones obsolete.
Lasers Could Soon Power U.S. Military Bases—And Not Even Jamming Could Stop It::We spoke to the project manager for DARPA’s POWER program, who explains how the wireless energy transfer technology will work.
Or anything reflective. Throw some strips of tinfoil at it (that's just chaff WW2 style) and it not only disrupts power it has a good chance of blinding a few of the troops on the ground too.