The BAMS-D program has been developing tactics and doctrine for the employment of high-altitude unmanned patrol aircraft since November 2006.

CNN: Navy drone crashes in Maryland

Callan points out that Verisign is developing a toolbox of other policing tactics.

FORBES: Spear The Phishers--Not The Fish

Cedric Leighton, a former Air Force intelligence officer who worked on developing the American drone program, said he believes the evasive tactics that militants are attempting to adopt will not tip the balance in their favor.

CNN: Militant tipsheet: How to avoid drone strikes