WASHINGTON — A top U.S. military intelligence official says the Pentagon will have to make costly changes to programs and personnel because of leaks by former National Security Agency analyst Edward Snowden.

Defense Intelligence Agency chief Lt. Gen. Michael Flynn is telling Congress Tuesday that his agency has to assume that Snowden took every document he accessed, and that much of it concerned Pentagon programs. He says he believes there will have to be changes in all branches of the U.S. military because investigators have to assume the information is compromised.

Officials have said Snowden downloaded some 1.7 million documents. U.S. intelligence officials have said some of those documents include the identities of undercover operatives. The officials spoke on condition of anonymity because they were not authorized to speak publicly.