Horatio's off and hovering over Calleigh, who's cracking, "These are not your daddy's bullets. Most bullets have striations, but these don't." That's because they're Sabot bullets encased in plastic. Calleigh says, "Specialty bullets. Not illegal, but also not widely available." And then we see a closeup of the bullet exiting the gun and shedding its plastic skin as it goes. Horatio explains, "It's encased in plastic to protect the bullet, making it impossible to match up the specific weapon, right?" Calleigh takes the ammunition choice as a sign of foresight and concludes, "[The sniper] does not want to get caught." Horatio concludes, "Maybe he was just beginning. Three dead before the morning rush hour is over. Who knows what the day will bring us?"
Why, it brings us something that's ostensibly a B-plot! Delko is wandering onto a tour bus, where the beloved grandmother from the first scene was sitting before a bullet shattered the window and killed her, if the broken glass and bloodstain are anything to go by. Delko tells us, "She was shot at nine-fifteen when the driver stopped for a bathroom break around Second, near Langley." This catches Horatio's attention, and he says, "Wait a minute: did you just say Second and Langley? We've got a fourth victim." Delko recaps how the shooting happened -- the driver heard the screams and a shot, got the bus to the hospital -- then asks if poor Grandma died as a result of some sloppy shooting. Horatio snorts, "Not this guy."
And now it's time for a video break: Speedle's busy doing the victimology voodoo while a danceable beat plays in the background. As is typical for these scenes, we get the idea that time has elapsed while we see nothing of value.
Horatio's back in the skybox, listening to Alexx explain how the wounds in Victim #4 differ from the previous three: "Trajectory is upward, into the left temporal lobe." Horatio checks this on his end -- the picture he sees is of a woman who's missing the top of her head, and there's the rod sticking out both ends -- and says, "You just said upward. Two-point-five degrees upward. How is that possible?" Alexx rolls her eyes like she wants to snap, "Was I there?" but she replies, "Ricochet?" Just then, Calleigh comes by, and Horatio anticipates her news by saying, "You're going to tell me that the bullet is not a Sabot." Nope -- it's a nine-millimeter. Horatio says, "That means we have two shooters -- one in the sky, and one on the ground." Calleigh muses that the ground shooter could explain the shot that was heard at the scene. While the two of them have been talking, Horatio's been dialing a number on his cell, and right then, Megan picks up. Oh, this is too good for words. The powers that be could actually keep her around for the rest of the season like this -- just have people call her, or be all, "Oh, Megan went out for coffee," or, if they must, resort to that creeptacular Digital Livia thing they did on The Sopranos where Tony talked to a CGI after Nancy Marchand died. Then again, if you're going to go to all the trouble of creating a digital Kim Delaney, you're going to want to debug the acting performance of the original, and it's probably less time and effort to simply rework the show. Anyway -- Horatio's on the horn with Megan, and he commands her, "You and Eric are on a different case. Take the grandmother on the bus." If I were Alex Rodriguez, I'd be worried: They're pairing me with Kim Delaney a lot. Does this mean I'm next? Then Horatio turns to Calleigh and says, "We have somewhere to be." She looks weirdly excited as she says, "Yeah."
Where they have to be is back at the scene of the crime, which they are now re-enacting with some plastic dummies. Then the contestants on The Bachelor are dismissed. I kid! They're setting up mannequins to approximate the positions the victims were in, and sticking lasers in the heads to mark the angles of trajectory for the bullets the sniper shot. Horatio explains, "These lasers should get us up close to where these shots were taken from." Calleigh and two other folk fire up the lasers. Horatio elects not to use his ClueVision around strangers, but rather, a pair of binoculars. All the lasers are pointing to the roof of the Inter•Continental office building. Horatio says, "Six hundred and fifty yards." Calleigh translates, "That's six and a half football fields." I had no idea snipers measured their marks in football fields. Or perhaps this is an example of that staple of explanatory writing, "Translate the jargon into everyday imagery to provide real-world context." Personally, that sort of thing never works for me: unless you've seen six and a half football fields back-to-back, using them as a way of making a distance more real is pretty useless. Anyway, Horatio muses, "One shot, one kill. This guy's either military-trained or police." Calleigh adds, "Marine Corps, probably. They're the best snipers in the world." Just ask Charles Whitman and Lee Harvey Oswald, both of whom received their firearms instruction courtesy of the USMC. Horatio says, "That is his nest up there. Let's go find out if he left us anything."