Douglas detectives are looking for whoever made a bomb threat to the Gardnerville AM/PM on Sunday night.Dispatchers received a call from an unknown male in his 40s or 50s who claimed there was a bomb at the intersection of Highway 395 and Waterloo Lane."There is 2 pounds of C4 set to go off in 30 minutes at Highway 395 and Waterloo Lane," the caller said at about 8 p.m.Sheriff's spokesman Sgt. Pat Brooks said the caller then hung up.Dispatchers traced the call to the pay phone outside the Gardnerville AMPM convenience store. Video from the store showed a man who …