Pros
There are some great off-the-beaten-path destinations, many great co-workers. You can get up to a week or two off per month, depending upon the schedule you are awarded. Very long international flights. One contract is with an oil consortium and that one aircraft is the only nice one in the fleet. Due to the extremely high turnover of flight attendants, if you hang in there, you can accrue seniority quickly.
Cons
Atlas uses an employment agency to manage the flight attendants to avoid union organizing. The company is a joke. The HR manager is incompetent and clearly has favorites and those on her "hit list". She has no flight attendant background and doesn't know the first thing about managing. Brutal schedules. Flight attendants are often scheduled up to the FAA maximum scheduled 18 to 20 hours on duty. Most flights start late at night. Some of the planes have crew rest areas and some do not. The hotels are hit and miss. Some are quite nice, while a few are actually in dangerous areas and bedbug infested. Many flight attendants are clearly not qualified for the job and the long hours on duty only magnify the situation. There is a lot of drama among the crew, especially on long flights, and actual fights have occurred. Many pursers are totally incompetent. You are not allowed to see the bid awards, so you don't know whether or not your schedule was awarded in seniority order. The interiors of the military charter aircraft are shoddily maintained, many audio devices broken, overhead bins not repaired, reading lights broken, and so forth. Many galley components don't work. The company just wants to turn the aircraft around. Excellence is not rewarded. If an employee isn't in the inner circle, they may as well resign themselves to just going to work and getting a paycheck. No opportunity for advancement, since you really work for the employment agency that Atlas hires. No jumpseat agreements with other carriers. After working there six months, you get the equivalent of a buddy pass on Delta. Health insurance is available after 90 days and does not cover pre existing conditions. This could possibly be the worst charter carrier to work for.