What we've learned so far: Davy's female, parents are Sam and Daniel, "abilities", speaks Ancient, crashed into the Gateroom, ya-da, ya-dah
From the (mentally recorded) Journal of Davy Jackson
It was pure luck (good or bad) about what happened next…
General Hammond stared at me in complete confusion. I stared back at him. The entire security team in the Gateroom stared at me. I carefully stood up, letting the dizziness subside as I looked around.
Between everyone staring and me and my massive headache, I didn't hear it at first. It was a simple sound, something that I've heard nearly every day of my life. The Gate was activating. I turned around, the resonances of the Gate warning me. For those of you without knowledge of Gate Science 101, the wormhole spiral at the instant of creation can vaporize anything in its path. As the seventh chevron locked into place, my brain snapped back into operation and I dropped to the hard grating of ramp seconds before feeling the displacement of the wormhole activation above my back.
In the control room, I could hear Hammond ask Davis if there was an iris code and who it was. I didn't hear the answer, but it must have been someone back early (which, with these guys, is almost never good), because the General immediately got on the PA. "Code red. Medical team to the Gateroom. Repeat; code red. Medical team to the Gateroom."
Code reds in Cheyenne Mountain are never good. A code red means under fire. For whichever SG team was out there, and me in here, this could get dicey (literally). Before I could get off the ramp and out of the way of the incoming team, the liquid in the Stargate rippled and angrily expelled a very bloody, tense, and pissed off Colonel Jonathan "Jack" O'Neill, who quickly turned around and fired upon the next thing exiting the Gate, a similarly bloody Jaffa with an unknown identifying symbol on his forehead. The Jaffa dropped like a stone, clearing a space for a second member of SG-1 to exit the Gate, the stoic Teal'c, who nodded at O'Neill and took up a similar firing spot next to him.
I scurried down the ramp further, when a bolt of what appeared to be staff energy came out of the Gate at me. I put my hand up and the ball veered off and hit the wall, leaving a scorch mark. No one else noticed, and I made my way completely to the bottom of the ramp. Another Jaffa exited the Gate and fired at the glass protecting the control room before he was stopped by another set of bullets from the marines.
Major Samantha Carter, Mom, came through next. She was more graceful in her landing, only stumbling before righting herself before ducking down out of the line of fire. Doctor Daniel Jackson, Dad, was the last one through and the unlucky one, too. Just as the iris closed behind him another staff blast emerged from the Stargate and imbedded itself in his back. He tipped forward and rolled down the ramp to my feet, a smoking burn directly over his spine.