aiming
air
airplane
ammunition
army
circle
collection
combat
computer
crosshair
danger
digital
direction
display
element
equipment
fight
goal
icon
illustration
isolated
military
monitor
navigation
object
optical
protection
radar
safety
scan
scope
screen
search
set
shape
sight
sign
sniper
sonar
submarine
symbol
system
target
technology
vision
visual
war
weapon
wires