checkpoint
access
attention
background
barbed
barbwire
barrier
beirut
block
blocking
border
boundary
captive
captured
confines
corner
danger
deadly
defend
defense
deny
detention
dividing
fence
freedom
gate
guard
gun
imprisoned
line
military
pain
post
protection
railing
regiment
rifle
road
rust
safe
secure
security
shoot
soldier
usa
war
warfare
wire