An `` escalating argument '' may have led to shooting , officials say . The rampage . Texas Gov . Rick Perry and Sen. Ted Cruz visit some shooting victims . Gunman Ivan Lopez killed three people , wounded 16 others at the Army post . Comment:
An `` escalating 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 , wounded 16 others at the Army post . Comment: