11. Aerial surveillance will be carried out on a daily basis and extended nationwide.12. Aerial surveillance will be conducted during the day off the coast of Sabah.13. Masters of camouflage, the North Vietnamese completely concealed their bases from aerial surveillance . 14. Regular aerial surveillance is carried out and the boundary electric game fence is maintained. 15. Israeli tanks growled in the distance and an unmanned aerial surveillance drone buzzed overhead. 16. The squadron provided aerial surveillance and early warning while operational from 1944 through 1998. 17. The squadron provided aerial surveillance and air traffic control for the Marine Forces Reserve. 18. Pakistan has enhanced ground and aerial surveillance , including helicopter gunships. 19. The squadron provided aerial surveillance and ground-controlled interception and saw action the Vietnam War. 20. The squadron provides aerial surveillance and air traffic control for the Marine Forces Reserve.
