Leidos said Tuesday it has agreed to combine its company with Lockheed Martin's IT services business in a deal that would create the largest government services contractor with about $10 billion in annual sales and roughly 33,000 employees. The transaction creates a new high-water mark in the government services industry, which has been rapidly reshaping to adjust to tighter budgets. Computer Sciences Corp.'s U.S. public sector business and SRA International late last year combined to create the largest services contractor...