(William Perlman/The Star-Ledger)
A National Guardsman stands patrol at Grand Central Station in New York yesterday as security was beefed up at airports and rail stations as part of ''Operation Liberty Shield.''
(Tony Kurdzuk/ The Star-Ledger)
Viewed through a mask of the same type, Edison firefighter Mike Pellegrino displays an air mask like those used by his and many other fire departments. New grant money has become available to help first response departments like Edison acquire gas masks to protect against biological and chemical agents.
(Robert Sciarrino/ The Star-Ledger)
Picatinny Arsenal employee Dave Burkhardt looks through a ''bunker defeat munition'' which mounts on the soldier's shoulder and fires a small rocket 300 to 1,500 feet. The projectile can punch holes in brick walls.
