Spitoon... before "the military fly UAVs all over the place" (i.e. outside danger areas or segregated airspace) the military will need to develop sensors that will allow the UAV to "see and avoid" other aircraft... someway off yet, I'd suggest?
That depends on what one defines "see and avoid other aircraft" as. Sensors other than visual ones can be and are used to detect "targets"!
Regards,
DFC