I'm assuming Krebs is some kind of intelligence asset, but it's not easy to connect. He was with Obsidian Analysis, which might have been some front company, since purchased by Cadmus Group. Kevin O'Prey founded Obsidian, and hired Clapper in 2006 to head a defense program. Christopher Savos, a CIA analyst, also worked for Obsidian in management. This site indirectly calls Cadmus the 'Deep State of Missouri', and says some of it's executives have had ties to British Intelligence.
firstsecretcity.com/2018/12/07/the-deep-state-of-missouri/