Dirk takes note of the location of the facility and how he got here – if this goes badly, he'd still like to come back to check this place out later – and watches the patrols for a moment to slip through. He's aiming to sneak through, but if there's no opportunity for it he'll try to just take a patrol out quick and quiet.

Either way, he's trying to get to that building, probably through one of the broken glass sections rather than whatever door exists just to be sneakier about it.