I could have pulled the fire alarm in the hallway or even put a smoke bomb in a trash can.
Thrice more the "blimp" passed over the submarine that was invisible to surface eyes, and each time let loose a smoke bomb.
Yes, and the lad who put the smoke bomb in the furnace room!
After this I guess he'll have more respect for a smoke bomb.
We had not long to wait before an enemy aeroplane arrived and, locating us at once, dropped a smoke bomb.
A smoke bomb in the air will denote position of submarine at that moment.
This indicated that the submarine lay on the bottom directly underneath the smoke bomb.
I offered to show them how to throw a smoke bomb, and they gave me one with an extra short fuse.