A charter member of President Obama's national security team, Michele Flournoy, is stepping down, according to The Associated Press.
"Michele Flournoy, undersecretary of defense for policy, is stepping down," AP Pentagon reporter Robert Burns tweeted Monday. "She tells AP she needs to 'rebalance' life, spend more time home."
Flournoy has been at the forefront of major national security operations and policy since Obama's early days in office.
A Pentagon spokesman has yet to confirm that Flournoy is leaving, which would leave two key Defense Department posts without permanent officials in place.
When Ashton Carter became deputy Defense secretary, he vacated the Pentagon acquisition executive post. That job is being done on an acting basis by Frank Kendall, who was Carter's Senate-confirmed deputy.