Abstract: A communications system provides subfleet calls for both voice and data communications using a secondary identification (301, 303, 305, 307, 309) incorporating a plurality of subfleets in a hierarchical arrangement. A message including the secondary identification (301, 303, 305, 307, 309) is transmitted to a communication unit (117) having a stored secondary identification (301, 303, 305, 307, 309). If the transmitted secondary identification sufficiently matches the stored secondary identification, the communication unit (117) responds to the instructions in the transmitted message.

Abstract: A lumbar support heating/cooling support belt is adapted to be worn over the lumbar spine and around the back of the user for back pain. The support has one pocket in the lower back section of the support. The pocket is capable of removably receiving a packet to create a thermal change in the pocket or provide air or foam rubber packets for support. There is an optional secondary support that runs over and attaches to the primary support. This provides additional desired muscular support by tightly or snugly adjusting via Velcro attachments around the back and sides. Then there are two criss-cross supports over the outer primary support which provide optional stiffness if desired by user. The two criss-cross supports both have an attached pocket which can house plastic or metal stays for even more support. This support provides the user many options and combinations in which to wear the support using all or some of the optional supports.

Abstract: A therapeutic garment is adapted to be worn on a human torso for therapeutic treatment of back pain. The garment has at least one pocket in the lower back section of the garment. The pocket is capable of removably receiving a packet to create a thermal change in the pocket. The distance between the pocket and the upper back section of the garment is adjustable so that the garment can be used by persons of different torso length.