How to use "concealed" in a sentence

The tall man pulled a silencer-equipped pistol out of a shoulder holster that was concealed under his gray sports jacket

He reached into a pocket of his leisure suit and took out a tiny aerosol can that was only slightly larger than one of those spray-style breath fresheners, small enough to be concealed in Bruckster's hand.

There must be some sort of road into the place, even if it's well concealed