Panel interview consisted of 2 face-to-face hosts (department Manager and Area Manager), and a Skype call to the area HR representative. All candidates were present for the first hour or so.
The HR rep went over the company side of things (safety, brief company history, importance of attendance), then handed the process over to the 2 face-to-face hosts.
They spoke for about 30 minutes, being very specific to outline the job duties, schedule, work requirements, and day-to-day tasks. They also explained emergency procedures (natural occurrences that require calling in emergency repair, crews that work together to bring the required equipment to get towers running again, etc), tools required/supplied, training schedules, seniority (relative to vacation, bidding onto new locations after 2 years, etc).
They also gave you extreme examples of what to expect, and made sure that the candidates left in the room were genuinely interested in the job.
According to the 3 interviewers, several people declined the interview after hearing details about the job, and several others showed up late (the doors were locked at 8a so any late arrivals were refused the opportunity to interview).
After the hour overview and job outline, they released us to the lobby of the hotel we interviewed at. After about 5-7 minutes, the interviewers came out and called us in, 1-by-1, in the order in which we arrived for the interview.
As a side-note; I was the only person that interviewed who did NOT have previous tower experience. All other candidates were already tower technicians for other companies (CenturyLink, AT&T, and Dish).
I feel that I was the lowest qualified candidate of the 4 of us in the room, and the only reason I was given an interview was for my previous Network/SysAd jobs where I had setup full mesh systems with node and peripheral additions/upgrades.