We logged 70~ish Watts out of duplexer during testing. However, The radios have 7 channels, 1-6 being simplex, and 7 being named REPEATER.
where I was the airport had 3 separate checkpoints, so there's 3 channels right there plus your baggage inspection team on one, and the repeater is used for admin/campus wide use, so I couldn't tell you how often it would be used, however, I can tell you where I was the TSA office and the main checkpoint are floors away so they most likely will use the repeater to communicate from checkpoint to office or office to baggage inspection. The other airport I had I installed an APX8500 consolette with all band antenna for there admin office in addition to everything (with a gosh darn mag mount).