We were on CO434 (PHX - EWR) last night (10:30 PM Departure on 4/9) and shortly before the scheduled departure, a soldier in uniform sitting across from us (6A) got sick and threw up all over the floor and the back of the seat. I didn't see it happen, but did see him sitting there, kind of slumped over, and not looking very good. Some of the passengers said that he was on his way home from Iraq, but don't know if this is true. Anyway, after a while, two Phoenix Policemen came on board and escorted him off the plane. Maintenance came and cleaned up the area, and eventually, someone else sat in his seat. The FA's were looking for a black bag he supposedly had in the overheads, but did not find it. The flight was completely sold out. Obviously, the flight was delayed by about a half-hour, but they made up for half of it en route.

I did not find out what happened, and why he was escorted off the plane. Does anyone know what happened, and is this normal?

DD