In close air support, artillery, mortar, and naval gunfire support fires, it is the term included in the method of engagement segment of a call for fire which indicates that friendly forces are within close proximity of the target, usually 600 metres however The close proximity distance can be determined by the weapon and munition fired.
"steelrain, steelrain, this is Hitman calling in fire mission, popeye uniform 059 098 038 degrees 200 metres, danger close"

"roger that hitman, splash in 5 seconds"
by CaptainIncredible June 15, 2009
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Military jargon for a fire mission ordered within close proximity of friendly units. Also to break wind - usually with devastating effect - in the company of close friends or family.
Josh: "Oscar Zulu Yankie Delta Niner, artillery away, danger close." *farts in friend's face*

Dana: "Jim, don't break wind in the room when my mother has come to visit."
Mother: "Since when did Jim care about danger close?"
by Nehima Six66 November 14, 2009
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A term that is meant too be shouted when you are in a public toilet and your about to take a massive dump after consuming food such as curry. This technique should be used to warn people or too create tension for no particular reason or for your own personal enjoyment.
You've just taken a dump and you shout "DANGER CLOSE" as loud as you can too warn people of the event. You then casually walk out without making eye contact with anyone else in there.
by ike2011 March 6, 2011
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Danger close is first performed by inserting anal beads into your partners butthole. Then when your partner is at the point of orgasming pull the anal beads out of her butthole quickly by the ring and kick them away by the ass screaming "FRAG OUT!"
Janet:"Yeah Jimmy and I did a Danger Close last night!"
Jolie:"Wow that's crazy!"
Janet:"Yeah! My ass hurts so bad!"
by Hajsksks February 23, 2016
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Used in military radio traffic to inform some one that the sending unit has enemy contact very near their exact position.
*Marine* Sir, it's so damn dark, I can't see 'em, but I can smell 'em.
*Marine Captain speaking into radio* Echo 2 Charlie be advised we have danger close.
by LawDog1317 August 23, 2007
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The one perk that broke modern warfare 2

What it does:

1. Increased explosive damage: increase the radius of explosives such as grenades, C4, and rockets. There go noobs and the grenade launchers

2. Increased air support: basically your killstreaks become much stronger. There is no running from Harriers, Helicopters, AC-130, or Airstirkes (even with Cold Blooded on)

How its used: campers and noobs use it with One Man Army, camp in one spot, and noob tube the fuck out of a map. Then they call in the Harrier and camp, call the AC-!30/Chopper Gunner and camp some more, then call in the nuke, end the game and ruin it for the rest of us.
Guy 1: (Kill Cam) That douche noob tubed me from across the map
Guy 2: Well duh, he has danger close pro, he can camp the whole map and then call in a stealth bomber
Guy 1: This game is full of these mother fuckers, I'm going to play MoH where there are no retarded perks
by Crunch666 December 14, 2010
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When performing sexual acts with a partner and they are either close to starting their period or having stomach issues, you do the deed anyways
I earned my danger close badge last night. I was going down on Kelly and after, she started her period! I close to getting my red wings!
by Willierobthorton March 10, 2022
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