JJ that sounds like a pretty wild experience for sure! I have to admit that I have a few questions, things to think about.... What do you think are the chances they were feeding you guys some kind of hallucinagen/drug and there really was something there but not as paranormal as you might think? Maybe it was a drill of some sort that you weren't allowed to know the truth about because then it would effect your performance?
I would never even consider these questions had I been in your shoes, as I believe in ghosts tho I've never seen one myself...only family members have, if I were you I probibly would have taken it for what it probibly was....(or was it??
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