No... They were as confused about the bats behavior as anyone else. However, that doesn't mean someone else could have been without their knowledge.

[He looks again at the bodies.]

Let's take a few more... And we should hold onto at least two ourselves. Just in case.

[In case there really is someone on the inside sabotaging things. Having had such a thing happen back in his world, he is much more sensitive about the prospect, no matter how long it's been.

If they can have the team at the Observatory launch an investigation as well, that should help cover bases. And they can hold onto the last as the final safekeeping.]