An ` ` ' argument '' may have led to shooting , officials say . ` It was a very unexpected thing in the middle of a working day . '' Texas Gov . Rick Perry and Sen. Ted Cruz visit some shooting victims . Gunman Ivan Lopez killed three people , injuring two others at the Army post . A memorial for the soldiers killed will be held at Fort Hood next year .
An ` ` ' argument '' may have led to shooting , officials say . Texas Gov . Rick Perry and Sen. Ted Cruz visit some shooting victims . Gunman Ivan Lopez killed three people , injuring two others at the Army post . A memorial for the soldiers killed will be held at Fort Hood next year .