Are Klingons nervous? Nope, the Bird of Prey is still the only one. Then again, Capt Kirk figured out a way to decloak it and save the whales. Terrorists just spray 7.62's in any and all directions anyway, so suggest you don't ditch your body armor, if that does anything for you. Ambush material? Maybe. Cloaking tanks on the move? What a laugh. Noise, clank, exhaust and dust are dead giveaways. Static camo? Might be good. Marines sneaking off ship for a ville run? Let's buy it, not matter the cost!