Military related bumper stickers ?

"Incoming fire has the right-of-way"
“If the enemy is in range, so are you.”
“Friendly fire - isn't friendly.”
“All that is necessary for evil to succeed is for good men to do nothing.”
“Freedom is not free, but the U.S. Marine Corps will pay most of your share.”
“The commander in the field is always right and the rear echelon is wrong unless proved otherwise.”
“If the wings are traveling faster than the fuselage, it's probably a helicopter -- and therefore, unsafe.”
“Five second fuses only last three seconds.”
“If your attack is going too well, you're walking into an ambush.”
“Never forget that your weapon was made by the lowest bidder.”
“When the pin is pulled, Mr. Grenade is not our friend.”
“Some people live an entire lifetime and wonder if they have ever made a difference in the world, but the Marines don't have that problem.”
“If at first you don't succeed, call an air strike.”
“Tracers work both ways.”
“We sleep safely in our beds because rough men stand ready in the night to visit violence on those who would harm us.”
“Teamwork is essential, it gives them other people to shoot at.”
“Whoever said the pen is mightier than the sword obviously never encountered automatic weapons.”
“Cluster bombing from B-52s are very, very, accurate. The bombs are guaranteed to always hit the ground.”
“The bursting radius of a hand-grenade is always one foot greater than your jumping range.”