To another G.U.N member ( lines you're responding to are in [ ] ), neutral: 
" I feel like we've looked all over the place and still no sign of Project Penumbra... The Commander isn't gonna be happy with this. "
[ Relax, we'll find it, Professor Svante's grandson, Moss, hasn't been here yet and there's no way it's gone from here. ]
" What was that? Did you hear that? "
[ I didn't hear anything, you're paranoid. ]
" No I'm serious, I think I heard something, I'm going to investigate. "
[ Not on your own you're not, I'm coming with you. ]