Not just Caboose. Tucker was...after what happened with Junior, they kind of made him this ambassador. He was out in the desert, with these Temples that belonged to the aliens. He was keeping enemies of the UNSC from taking the place for themselves.

[Boiling this down to a summary that that conceivably makes sense is a hell of a skill, and it's not Washington's best quality. Given his penchant for dramatics and generally cryptic bullshit, it's safe to say he's fucking terrible at it.]

[But he seems to have sensed that some of the tension has gone down, that it's a little less immediate. Ami starts to bump the top of her head against the backs of Church's knees.]

He...missed you too.