There's a slight quiet moment, like maybe Billy is contemplating that last part. He does agree with the other's opinions on who is more or less likely to be swayed - though Armitage is mostly likely if Tozer is involved as well, as much as he was always chasing the marines around.

"Did something happen between you and Tozer?" He then asks. Apparently that's what he was thinking about.

Billy does think that Hickey could mean it in general, considering Tozer does seem kind of headstrong, but Billy also doesn't think of the man as being particularly bright. It probably shouldn't be too difficult for Hickey to pull the same thing off all over again. Unless it was rooted in some experience Hickey has, but Billy couldn't experience anymore. "After I.."

.. he just lets that sentence trail off, considering they both know what words would follow, instead shrugging lightly.