Pros
If you know your market worth and negotiate to it, the base pay is pretty good. There are many people who've been there a long time 15+ years, from the employee owned days. They can navigate corporate processes really well. Work/life balance can be really good. Easily the best in my career for keeping normal weeks to about 40 hours. The vacation isn't great, but it's also harder to get burned out if the contract caps you at 40. Lots of positions available in lots of areas. Great if you want to stay with a company but need a change.
Cons
Poor raises and declining benefits every year. Between 2017-2018, paid-time-off (combined sick and leave pot) for loyal employees (10+ years) was cut by 3 days. It now costs $1200 more to insure your spouse (if you spouse has insurance available elsewhere). In 2018, the 401k match is significantly reduced for those working irregular hours (overtime is no longer eligible, and true-up is gone) OCONUS. Every year something else changes to become "more competitive" (average) and these were it for 2018. In 2016 there was no holiday/employee appreciation for our group. Leadership turnover is bad for vision purposes. Fat separation packages/golden parachutes are bad for morale. In the last 5 years, these leaders are no longer in place: John Jumper (CEO), Stu Shea (COO), Sarah Allen (CHO), Gulu Gambhir (CTO), Michael Leiter (EVP), Lou Von Thaer, Mark Sopp (CFO), Vince Maffeo (General Counsel), Mary Craft (CAO), Marty Miner (CIO), etc.