The Coast Guard plans to award several sole source contracts for preventative and remedial maintenance for its various radiation detection units. The service plans potential five-year awards to Thermo Fisher Scientific [TMO] for maintenance of all IdentiFINDER-U radioisotope identifications, to Sensor Technology Engineering, Inc., for maintenance of all Radiation Detection Backpacks, and to Polimaster, Inc., for maintenance of all PM-1703 gamma/neutron personal radiation detectors.