3d
abstract
air
airplane
alert
army
blip
circle
computer
control
cross
danger
defense
detect
detection
digital
display
equipment
globe
graphic
green
icon
isometric
locate
map
military
monitor
object
plane
protection
radar
radio
range
safety
scan
scanning
screen
search
searching
signal
sonar
submarine
symbol
system
target
technology
visual
war
weapon