I've stated this before somewhere else, but I wouldn't use government docs as the "end all" to verify whether something experimental landed in Socorro. This little anecdote doesn't relate to mysterious aircraft, but more in regards of record keeping.... Back in 1993 when I was on a 6 month deployment to Puerto Rico - the base there had a bomb cart (with a certain serial number on it which I cant remember). Towards the end of deployment, my boss was bored and had some of us repaint it. After it was freshly painted we made up a stencil that said "EFK-069" which would be the new serial number for it (which was an inside joke & my boss was aware of it). So in the weeks to follow we would always joke that we are going to cause the biggest mystery when the gang (that is permanently attached to the Navy base in Puerto Rico) there that is in charge of all the bomb carts cannot find any records for cart EFK-069 (each card has an extensive record log which keeps track of when it was serviced, any repairs made, etc.). So if you strictly went by the books.....it would appear that cart EFK-069 mysteriously appeared on the base out of thin air - when meanwhile there was a juvenile, mundane explanation for its existence. Another time we had a bunch of CAD's (Cartridge Actuated Devices) that we used to explosively launch sonobuoys out of the plane. We kept them in storage magazines. One time during a CAD count, some indiviudals wrote words & symbols in Sharpie on the sides of a bunch of the CAD's to be funny. One day our boss saw it, got kinda pissed, wanted to know who did it, but then after that said if the Big Wig Boss comes around & sees that, we're all gonna be in big trouble. So on the next mission that was being flown out of Sicily (where we were at the time) someone brought the marked CAD's into the plane and told one of the crewman "Please do not land with these." - which meant leave them to rest on the bottom of the Mediterranean Sea. So they ended up getting dropped through the freefall chute in the plane and sank to the bottom of the sea. So that is another example where if you went strictly by the record books, it would show that a certain amount of CAD's mysteriously vanished with no record of anybody signing them out or using them. There one day - gone the next. Those are just two small examples I have (and I have others) - so God only knows what other weird things that have happened and/or screwups where something happened and was not logged correctly. I think of these things when I read about a certain case and the believers say things like "WRONG. THERE WOULD HAVE BEEN A RECORD OF A REFUELING PLANE FLYING AROUND THAT NIGHT." etc. I say "wrong" back to them. To me, when I see dates & times don't add up (or don't show up at all) - it holds little weight because I saw how things can get fudged, faked or legitimately forgotton to log.