businesswoman working data analyzing on computer - school surveillance stock videos & royalty-free footage01:02
large map on wall showing location of cctv surveillance cameras staff looking at closed circuit television screens in police monitoring control... - school surveillance stock videos & royalty-free footage04:24
aerial views neighborhood elementary school in western usa small town america views of housing developments alongside agriculture and rural elements video series - school surveillance stock videos & royalty-free footage00:11
a vacant classroom sits filled with empty school desks. - school surveillance stock videos & royalty-free footage00:13
lateral tracking shot an empty school classroom filled with vacant school desks. - school surveillance stock videos & royalty-free footage00:09
empty desks sit inside a vacant classroom - school surveillance stock videos & royalty-free footage00:12
student watching screen, reflection in glasses bu co ed rs - school surveillance stock videos & royalty-free footage00:29
backward tracking shot of empty desks in a vacant classroom. - school surveillance stock videos & royalty-free footage00:20
forward tracking shot of an empty school hallway. - school surveillance stock videos & royalty-free footage00:15
home security camera footage of children coming and going - school surveillance stock videos & royalty-free footage00:23
teenage scout boy and scout girl go hiking on a forest road - school surveillance stock videos & royalty-free footage00:08
outdoor scouts. studying rangers survive in wild tree group of scouts in uniform sitting in camp - school surveillance stock videos & royalty-free footage00:09
eyeglasses with light reflected from computer - school surveillance stock videos & royalty-free footage00:11
looking through a classroom door window are empty school desks. - school surveillance stock videos & royalty-free footage00:06
sun rising through the atmosphere, from orbit - school surveillance stock videos & royalty-free footage00:11
lateral tracking shot of an empty high school entrance. - school surveillance stock videos & royalty-free footage00:09
lateral tracking shot of an empty basketball gym. - school surveillance stock videos & royalty-free footage00:11
forward tracking shot around an empty school hallway. - school surveillance stock videos & royalty-free footage00:12
low angle of a basketball sitting in an empty school gym. - school surveillance stock videos & royalty-free footage00:16
futuristic hacker interface with hud and infographic elements - school surveillance stock videos & royalty-free footage00:20
outdoor scouts. group of scouts in uniform walking through nature. - school surveillance stock videos & royalty-free footage00:06
reflection online shopping on eyeglasses, looking at computer monitor - school surveillance stock videos & royalty-free footage00:40
futuristic user interface with hud and infographic elements. - school surveillance stock videos & royalty-free footage00:25
clean energy typed in search engine bar on digital screen stock video - school surveillance stock videos & royalty-free footage00:10
tracking device on child's backpack to keep track of your stuff - school surveillance stock videos & royalty-free footage00:19
tracking device on child's backpack to keep track of your stuff - school surveillance stock videos & royalty-free footage00:05
dr. hardin jones instructs students about the effects of marijuana use. - school surveillance stock videos & royalty-free footage00:09
woman looking screen reflection on eyeglass - school surveillance stock videos & royalty-free footage00:36
julian amery on future of space travel:; england: air ministry: int julian amery mp intvw sof q: has any thought been given to the military use of... - school surveillance stock videos & royalty-free footage01:16
transnistria: ext rooftops of houses on hillside derelict building with string hanging from post in foreground people along on path as smoke rises... - school surveillance stock videos & royalty-free footage06:29
air force commanders of '5+5 defence initiative' gathered on thursday, oct. 14, in tripoli, libya in an effort to coordinate and improve... - school surveillance stock videos & royalty-free footage01:54
smart home concept. adult man pressing button on smart home application to check on his daughter status. close up pan. - school surveillance stock videos & royalty-free footage00:13
police cars patrol the streets of dayton, ohio, where children line up to board buses in a peaceful start of court-ordered busing for school... - school surveillance stock videos & royalty-free footage00:07
an eyewitness recounts an attack at a primary school in eastern kenya by suspected al-shabaab islamists that left three teachers dead - school surveillance stock videos & royalty-free footage02:56
durham constabulary awarded two "outstanding" ratings despite funding cuts and local deprivation; uk, durham; pcso vikki gill and pcso victoria... - school surveillance stock videos & royalty-free footage05:16
lateral tracking shot of an empty school corridor and hallway - school surveillance stock videos & royalty-free footage00:17
surgeon working in holographic virtual reality 3d touch screen technology - school surveillance stock videos & royalty-free footage00:30
student watching screen, reflection in glasses - school surveillance stock videos & royalty-free footage00:18
businesswoman working data analyzing on digital tablet computer - school surveillance stock videos & royalty-free footage00:24
muscle: electrical activity of contraction - part 8 of 15. the regulation of single muscle fiber contractions is achieved through a relationship that exists between muscle fibers and nerve impulses. using highly specialized equipment, dr. martin morad dem - school surveillance stock videos & royalty-free footage00:25
poi kalyan dome framed by wall of bricks - school surveillance stock videos & royalty-free footage00:06
montage students and faculty in an engineering school in bangkok / thailand - school surveillance stock videos & royalty-free footage00:47
woman use computer to work at office desk - school surveillance stock videos & royalty-free footage00:07
montage training and instruction of student pilots and navigators at royal airforce college / united kingdom - school surveillance stock videos & royalty-free footage01:07