I went back to Rachel for the 2nd time, this past July, with an Area 51 Tour Bus full of MUFON (mutual UFO Network) enthusiasts. Two of our group work for the DoD...
One bought a tie with Alien heads all over it, and the other bought a Lariat type tie that had a huge alien head on it. They both planned to wear them to work at the DoD on Monday, their first day back after their bucket list vacation tour to Area 51. Wish I could have been a fly on the wall when they walked in wearing those things!
Since they're both retiring at the end of this year, it's highly unlikely they would have been penalized. But I'm sure I'll never see them again, so I'll probably never know what the reactions were.
The trip was much nicer than driving it by myself - lots more fun to go with a group of people who are interested in the same agenda. They took us to the front gate instead of the back gate where I went in 1994. It was so amusing to see the guards call for "back-up" - 4 huge SUVs came from somewhere else on the base to help block the gate, once they saw this group of mostly over 60 years old, some disabled and in wheel chairs, walking/being pushed the 1/4 of a mile from where the bus parked up to the front gate. The best part of the trek was the gorgeous sunset off to the West.