Your best "oh crap" moment?

Getting caught working a candy bar machine while in BCT.

Fortunately, quick thinking and some creative conversation saved me.

I still think I should have gotten a ribbon for tricking that Drill Sergeant.

Some of the guys with O.A.F. beards and cool dune buggies popped off a MK-19 round through the windshield of a fuel tanker that supplied a FARP I was near at the time. With everyone on their bellies looking for the source of contact the bearded ones rolled past in their dune buggy while one shouted "My Bad". The only injuries were to the fuel truck cab and air filter.

CPT (Join to see) I got a big one. I was a brand new PV2 to Fort Stewart. Straight out of Basic so I am really new to everything. I get BN staff duty. And it just happens that we are under 100% ID checks everywhere. Even in the BN and well I was doing as instructed checking everyones ID's and not letting SM's in that don't have it.

Well one of those SM's happen to be the BN Commander. I politely ask him for his ID not realizing who he was. He was in PT's no less. He looks at me and says look up their on the wall theirs my ID.

I was so flabbergasted that I didn't call the BN to attention and he storms off. Well needless to say as the CSM came down to chew us out. I never did BN staff duty ever again. LOL

Mine has to be when I had just got home from shift and my LT called me back in. The jet I had worked on all day crashed on the runway. I was terrified.

Mortar live fire. 29 Palms California. I was the 81mm mortar FO. Then I heard our Arty guys fire for effect on the mortar pos, thinking it was a target location. Could have gotten really bad, really quickly. Time of flight for an arty round was about 30 seconds and you should have seen those Marines move. Someone got their ass chewed, never found out who f-Ed up the target location. Got tense that's for sure.

Well, there was the time right after BCT graduation.

I was alone in the bay mopping the floor. We had liberty right before, and one of my buddies had exercised his PX privileges to purchase some CDs and a CD player. Before he had left, he told me that I could litsen to some of them if I wanted.

I was rocking out to "Kryptonite" by 3 Doors Down, and was into the second chorus when I looked up and saw Drill Sergeant.

Yeah.

After that, I'd say the first time a rocket flew over my head in Iraq. We were doing a Det Ops mission and I was giving a tour to my PSG inside the TIF. We were caught out in the raceway between the fencelines with no cover, no IBA, no K-pot. It was only a one-shot attack, wham-bam and only a truck blew up, but it was our first time BOG, so we had both sprinted for cover like goofballs.

A scary "Oh Crap". ....I was the Supply Sgt, so I had access to the CO's jeep. We were on a field exercise at Ft Drum, and I had to make a self service run into the cantonment area. On the way back, I stopped at an empty barracks to take a quick shower. I placed the soap in the soap dish without paying attention. Someone had put a double edged razor blade in the soap dish and it suck to the bottom of my soap. I started washing and noticed a little blood, so I immediately stopped. Thank God mama taught me to wash from the top down. "Ouch"

Doing drill practice in Lackland during the summer. Although I was raised in Texas and had spent the past 6+ years living there without air conditioning, this particular day was getting to me. I needed water and I needed it bad. I was trying to determine was it worth the guts to ask for permission to break rank and get some. I felt myself losing ability to press on and knew if I didn't ask soon, I would be hitting the concrete. Ok, it's worth it. "Sir, Trainee Chiles reports as ordered" "What?!" "Permission to break rank to grab my canteen." He halted the flight. Looked over at the flags for the temperature rating. OH CRAP, black flag. We shouldn't have even been out there. He at-ease marched us to grab our gear and then get back to the squadron building.

I don't drink and was driving another guy's Jeep POV back from a day off at a nearby lake. Other guys were all drunk and it was after dark. I did not know that they were throwing empty bottles at oncoming cars.
Got back to post and were met by highway patrol, 1st sergeant, CSM....
Not good. Not good.