1 loud shot, followed by another, another: Survivor describes shooting in movie theater

A woman leaves a bouquet of flowers at a makeshift memorial for store co-owner Jillian Johnson at Red Arrow Workshop in River Ranch in Lafayette, La., Friday, July 24, 2015. According to The Daily Advertiser, store co-owner Johnson was among the victims that died following the Thursday night shooting at the Grand 16 theater. (Paul Kieu/The Daily Advertiser via AP) (The Associated Press)

Melodie McMath looks at flowers at a make-shift memorial outside of the Red Arrow business for the owner Jillian Johnson, a victim of the the movie theater shooting, in Lafayette, La. on Friday, July 24, 2015. Johnson was one of two women killed in an attack in Lafayette on Thursday night. John Russel Houser, 59, stood up about 20 minutes into a movie and fired first at two people sitting in front of him, then aimed his handgun at others, firing at least 13 times, police said Friday. (AP Photo/Denny Culbert) (The Associated Press)

Louisiana State Rep. Terry Landry speaks during a press conference regarding Thursday's deadly shooting at the Grand Theatre in Lafayette, La., Friday, July 24, 2015. (Paul Kieu/The Daily Advertiser via AP) NO SALES; MANDATORY CREDIT (The Associated Press)

Emily Mann and her friend had come into the theater a bit late for a showing of "Trainwreck" so they quietly found seats near the top of the small theater.

Neither of them noticed the man just a few seats down until 20 minutes into the movie.

That's when John Russell Houser got up and began firing. He killed two people Thursday before turning the gun on himself.

Authorities are still trying to piece together what happened. Houser also wounded another nine people.

Houser had a history of mental problems. He bought the gun in Alabama and arrived in Lafayette in July.

Mann saw Houser fire off a number of shots before she dropped to the floor and fled the theater.