That shit was running rampant in the Navy out here in Va cause it didnt pop up on drug tests, but it was fuckin people up. the kind I saw was called K2 and the strongest was called Fire. The K2 was cool, made me moody, I mean um .. *cough* made my friends moody, but the buzz was cool like the real thing. The DoD banned it cause they cant control it or catch it and put all the places that sold it off-limits so of course this peaked curiosity even more and a few people got a hold of that strong one (Fire) and that shit is NO joke, had me, excuse me I meant to say friends of mine hallucinating and feeling their heart was about to beat out of their chest. had a nigga curled up in the living room until the effects wore off. No Bueno! Fuck that shit, I'll wait until Im retired and buy real weed of the urge is there, but LEAVE THIS SHIT ALONE. 
