WASHINGTON (AP) — The Army’s vice chief of staff, Gen. John Campbell, last year cited his son’s experiences as a soldier in Afghanistan to answer a senator’s tough questions about a troubled intelligence technology system.

This week, after an inquiry by The Associated Press, the Army acknowledged that Campbell misspoke about his son’s unit. The general omitted some key facts during a budget hearing on Capitol Hill as he sought to defend a $4 billion system that critics say has not worked as promised.