She lowers the scope in alarm.
Misato:“Hold the phone… They're gonna use an N² Mine!?”
Reichu: Talk about ending up in compromising positions.
MDWigs: Is Shinji looking at Misato's bust here?
Reichu: Well, why look outside when all the scenery a young male could ask for is right in front of him?
OMF: Though it's a little ambiguous (and what isn't in this series?), I think he's staring at Misato's cross.
Sephizim: Given what we know about Shinji, it is as equally likely that he's staring at her chest as it is that he's absorbed in such a mundane detail as her cross. Could even be both, or that one stemmed from the other.
Kendrix: Again, another of these cuts connected by fluid motions, and another hot action movie chick cliche: The cool gadgets!
Also, this showcases how EVA often just "throws" its terminology like "N²-Mines" or "AT-Field" on us without explaining what they mean. You can more or less puzzle it together, but when you first watch this episode, they'll be just complicated words to you... a nice way of giving the audience a taste of Shinji's situation, since he doesn't have a clue either and probably hardly gets what Misato is talking about.
