Correction: Always thought that Area 51 was near Roswell, NM. Turns out that it's in southern Nevada. Roswell's just near an alleged alien crash site.
While passing through Roswell , near Area 51, on the way to Carlsbad Caverns several years ago, we decided to visit the UFO museum just for kicks. Imagine the hokiest tourist trap you've ever seen. Then imagine one 100 times hokier, and you'll have an idea of what the museum's like. Worst of all, we were stupid enough to pay for it!
I can assure you that no visitor from an advanced alien civilization would go anywhere near Roswell -- not even to crash.
"Computer, projected crash landing site?"
"Near Roswell, New Mexico, Captain."
"OMG, anywhere but there! Computer, how many will survive?"
"All aboard will survive, Captain."
"Computer, estimated time to impact?"
"Impact will occur in 45 seconds, Captain."
"Computer, the crew has voted unanimously. Activate self-destruct sequence NOW!"