3:15 p.m. ET: The prosecutor is now playing Lauer's 911 call in court. "I can't see him, I don't want to go out there, I don't know what's going on," she said on the call. You can hear yelling in the background.
3:13 p.m. ET: Lauer says she heard her next door neighbor, John Good, open his door at one point. He doesn't have a screened porch, it's just open.
"He said something along the lines of, 'What the hell are you doing?'" said Lauer. "The yelling for help continued."
3:11 p.m. ET: "The 'yelps' turned to 'helps,'" said Lauer. "It was one person yelling help. It just sounded like the same voice the entire time. It was a man." She's not sure if there were scuffling noises at the time. The yelling for help stopped after the gunshot.
3:09 p.m. ET: Lauer says she went into the kitchen to stop her husband from getting involved and that's when she heard the gunshot. The phone was at Lauer's ear the entire time, she never went closer to the door and put the phone out to let the operator hear what's going on.
3:07 p.m. ET: "I didn't want them to hear me snitching on them and calling the police," said Lauer. She wasn't sure if it was just kids so she had moved away from the glass doors.
Her husband was in the kitchen, maybe getting a knife to help.
"He was going to get something and maybe go around the front and see, but... that didn't happen," said Lauer.
3:05 p.m. ET: "We decided to call 911 as soon as we heard the scuffling noises," said Lauer. From the time she muted the TV until the time 911 picked up her call, she says it took about 30 seconds. Her husband tried to call first but his phone locked up on him.
"At the point where I'm dialing 911, it's what I describe as 'yelps' -- it wasn't actual words that I could make out yet," said Lauer.
3:02 p.m. ET: The second round of noises occurred immediately after she muted the TV. "After the scuffling it gradually went into like a grunting noise," said Lauer. "It sounded more like if two people were rolling around. At first it sounded like maybe people were rolling around... after that it sounded like wrestling. At one point I thought they were going to come through the screen." She says she is basing everything on what she heard since she didn't see anything.
3:00 p.m. ET: "I keep calling it like a three-part exchange. One person said something, then another and then another," said Lauer. She describes the tone as flustered. "I muted the TV as soon as I heard the voices," she said.
"Immediately after... I just heard whoever was out there scuffling around... it sounded like sneakers on pavement and grass," said Lauer. "Like someone was running on the pavement and on the grass -- it sounded like that."
2:57 p.m. ET: "I just heard voices," said Lauer. She says she could tell the voices were outside in the backyard but she couldn't make out any words. She could tell the voices were coming from the left of where she was sitting. "It just sounded like loud talking," she said. She couldn't tell how many people there were.
2:55 p.m. ET: Lauer was watching TV with her husband the night Martin was shot. She was on the loveseat, which faced the sliding glass doors. She describes the volume on the TV as "pretty loud." She also says it was raining and her sliding glass door was open. Her view of the backyard at night is obstructed by the blinds.
2:52 p.m. ET: Lauer is describing the layout of her home. She says she had bamboo blinds that covered the majority of her screened porch. They were closed on the night Martin was shot.
2:50 p.m. ET: The prosecution has called Jenna Lauer to the stand. She lived in Zimmerman's neighborhood when the shooting occurred and made the 911 call on which the screams for help were captured.
2:47 p.m. ET: MacDonald tells prosecutors that a more detailed record has to be requested within six months of the calls, otherwise it's not available. This witness has been excused.
2:46 p.m. ET: Defense attorney Mark O'Mara is now questioning MacDonald. He's asking him again about how a call to voicemail looks like an outgoing call. The connection time on these calls is the length of the voicemail, according to MacDonald. O'Mara hs finished his questions.
2:42 p.m. ET: Prosecutor Mantei is going over specific calls made on February 26, 2012. MacDonald points out a call that looks to be outgoing, but really it's an unanswered call being sent to voicemail. Every call made after 7:12 p.m. ET that night goes straight to voicemail, according to MacDonald. The prosecutor has finished his direct examination.
2:37 p.m. ET: There has to be some sort of connection for a call to register, according to MacDonald. If the call is only a few seconds, MacDonald says it rounds up to the minute. Prosecutor Richard Mantei points out a call made at 7:08 p.m. ET for five minutes and a call made at 7:18 p.m. ET that lasts for one minute.
2:34 p.m. ET: Text messages are date-stamped with Pacific time, according to MacDonald.
2:33 p.m. ET: MacDonald is describing which calls are incoming vs. outgoing, which ones are text messages, which ones are mobile-to-mobile and how long the calls have lasted.
2:30 p.m. ET: MacDonald is describing how phone records are created. He's also looking at records being displayed on the projector in the courtroom.
2:28 p.m. ET: The prosecutor has called Raymond MacDonald, a senior manager at T-Mobile.