A clamp apparatus includes seat and a stopper. An exemplary device includes a relay module comprising: a mast having an inner surface and an outer surface, the inner surface defining a cavity; an antenna disposed within the cavity; and a mounting device coupled to the mast and engageable with a utility structure. The mammal is placed into the mummy bag of the portable thermal rescuerecovery system which also has a pump to circulate the liquid and a heat exchanger to cool or heat the liquid. The coordinates of the processed return signals are compared to coordinates of known objects in a pre-existing database to determine whether there is a match between the return signal and a known object.