Tracks. Jay follows the trail to a clearing and calls the other cops over, but we don't yet know what they're looking at.
Wee-Bey dials a number from a pay phone and hangs up. Little Man takes a sip off a can of...I'm guessing Fresca (not really) and muses, "I wonder who that bitch was." "It's always something," rejoins Wee-Bey, who would know. After a moment, the phone rings. "Done?" asks Stringer on the other end. "Done," Wee-Bey confirms. He hangs up and they book, Little Man tossing his can on the ground as they go. I wish the meetings at my office were that efficient.
Turns out Jay's found even more footprints, and calls for casts of those as well. Moving on, Bunk makes a pleased noise: the shooters' hoodies have been abandoned on a shrub. Jay surmises that "they camped here," and orders the anonymous detective behind him to make sure no one comes near them "until the tech does his recovery." They walk on, and soon Jay sees another dark bootprint on a patch of concrete. "He stopped running," says Bunk. Jay: "Either he got tired, or--" "Or he got into a car," says Bunk. He radios his location, and calls for a lab crew and someone from the Department of Power and Water, with a jackhammer. NOW it's a party.
Hospital. Rawls storms in, McNulty in tow, and takes him straight to Daniels, who wastes no time telling McNulty: "Alive. In the OR." Rawls holds out a tape of the wire recording, saying that the cops at the scene have already heard it. Foerster gets into a minor tizzy casting about for a machine to play it, but Holley calmly sets one up, and everyone gathers around to listen to what we've already heard. Daniels identifies Savino's voice, and as the recording goes on, even the most veteran-looking cops (by which I mean all the greyhairs) can't help being affected. The camera holds on McNulty as Kima says, "I hope you all copy that," and asks Orlando, "This got the right feel for you?" Orlando says his bit about not knowing where the stash house is, and then Kima asks, "What's that?" "Jesus," mutters Burrell, looking away. We're back to McNulty, breathing hard as Kima says, "Something ain't right...This shit ain't right." "Christ!" exclaims Foerster, his face crumpled. We get a brief shot of Burrell, frowning with the suspense, knowing what's about to happen, and then when the shots start, McNulty lurches painfully. "What the fuck?" hisses Kima on the tape. "She can't find the gun," interprets Daniels. Kima briefly describes the shooters, and then there's a torrent of shots, and McNulty goes greener. "Shut it off," says Rawls shortly. Holley moves forward to do that while, behind the cops, McNulty leans over a nearby garbage can and vomits into it. Getting down all the detail makes it seem like this goes on longer than it does; it's very fast, and very upsetting. Everyone turns around at the sound of McNulty's retching, and then the crowd of cops breaks up.