An endoscope system comprises an electric scope, an input apparatus, a processing unit, and a computer. The apparatus can include a sealing mechanism having an inner bore formed therethrough; a check valve adjacent the sealing mechanism; a circulation device adjacent the check valve; and a rotatable nozzle adjacent the circulation device. An RF absorber is positioned adjacent an area of the RF component that radiates energy to aid in reducing energy radiated from the RF component into the RF metal shield. The pair of bolt-receiving bores extend between the inner face and the outer face along bore axes at acute angles to the outer face. The thermal expansion coefficient of the carbon material at 350 to 450\xb0 C. The vehicle may comprise a dispenser of a number of munitions each itself incorporating a guidance sub-system incorporating gyros, in which case corrections of gyro parameters of the missile guidance sub-system may be effected prior to missile launch on the basis of repetitive comparisons of attitude data as measured by the dispenser and munition sub-systems.