Abstract: An underground utility line flagger and marker having an elongated main body having an upper end and a lower-end ground penetrator, a forwardly projecting handle at the upper end at an acute angle to the main body, the ground penetrator having a marker flagstaff-engagement recess at the bottom thereof, and a foot-driven projection on the main body whereby the staff of a marker flag lying on the ground can be inserted into the ground with the flag upright by using the handle to place the engagement recess on the flagstaff and stepping on the peg.

Abstract: A depression gun pod for detachable connection to an aircraft stores suspension rack, the pod having a gun and having a gun mount providing for depression of the gun in elevation and for limited azimuth movement; the mount utilizing a plurality of planar frame-like members which are disposed in a compact configuration within the pod when the gun is in a forward firing position and which rigidly support the gun as it moves in depression and azimuth.

Abstract: A sabot fragment diverter deflects selected sabot fragments discarded by ot type ammunition in a directionally controlled manner to prevent direct fragment impact with the firing platform or impact of a deflected fragment with the projectile from which it is discarded. A fragment diverter cone which includes a deflecting surface, a fragment cutter and a barrier dam is connected to the muzzle end of a gun system by an extender cage and a mounting section.

Abstract: A device for determining the velocity, trajectory and attitude of a projele. Light beams from two perpendicular linear arrays of light emitters are incident upon corresponding linear photodetector arrays. Each light beam in the linear arrays includes an individualized characteristic to permit unique identification of each beam. Trajectory and velocity parameters are determined by identifying which detectors have an interrupted light beam and from the time interval between actuation of the arrays.