The less energy structure is smoke producing (75%)/lighting (75%) pyrotechnic composition, reinforcement material (15%), brass/brass powder (15%) and aluminized carbon/glass (25%). The fibers (0-5%) are kevlar, hemp, glass and carbon fibers (20%). The masking/deception materials (0-5%) are short carbon fibers, carbon and brass powders, bronze, spangles, metallized and covered polymeric fibers, conducting material and red phosphorus. The energetic material is covered by a protection layer. The reinforcement materials (10-30%) are micro balloons (10%), phenolics, polystyrene, trinitrotoluene (20%), hexogen (50%) and nanocarbon tubes. The energetic components are fusible secondary explosive material (10-30%) associated with a nonfusible explosive (50-60%) and synthetic binder (10-30%). The energetic material is useful for forming a body and/or wings of a pilotless aircraft. The load material is useful for camera and/or relay of information transmission of the pilotless aircraft.