I was at FLL around April of this year and this former marine who was being loud and boisterous made me aware of someone who was being deported. He wasn't talking to me but instead, happened to meet a fellow ex marine and they started talking but he was talking 80% of the time. He then pointed to a guy sandwiched between two sheriffs, with the sheriff at the back carrying a brown envelope. He then said he used to accompany such people and that's how he knew the dude was being deported. I'm not sure how he was doing this yet he was a marine. But anyhow, that's how I knew how to spot a deportee.