"The three Pakistani men were taken into custody and questioned after other passengers complained that they were moving about the cabin, FBI spokeswoman Gail Marcinkiewicz said"

I have the solution - all Pakistanis, Arabs, Middle-Eastern looking folks SHOULD at all times remain seated - that way,
(a) No suspicion
(b) They all die sooner or later by DVT (remember this was a long-haul flight)

Direct outcome of (b) as some would see it = No more terrorists!