The Pentagon has recently recognized small drones as 'consumable commodities' like bullets and grenades so there is a role for them to play but U.S. military isn't about to pivot to a strategy of winning wars with swarms of cheap quadcopters. The core of American military power is firmly rooted in long-range kill chains, which is about finding a target to take out (often far in advance of the operation) and then precisely killing it from far away.