Pros
Leidos is going through a lot of change as it recreates itself after the split of SAIC. There is a tremendous amount of opportunity at Leidos if you're the type of person that can handle challenges and is not thrown off by change. The changes being made, though rough if they affect you or those you care for, are necessary for Leidos to compete in a very tough market. The company has some new and emerging leaders who know their stuff and who will succeed in making Leidos a very good company that continues to provide quality support to their customers while, at the same time, doing great things for our country. The folks who help craft the new Leidos are going to be part of a great end product company.
Cons
If you have trouble dealing with change or just can't afford to deal in an environment of uncertainty, this may not be the best company for you if you're not direct charge. The benefits and work-life balance are the same as other contractors.