Tightened security in New York City and Boston this July 4th

New York City and Boston are ramping up security this Fourth of July â?? Bostonâ??s first major public gathering since the Boston Marathon bombing.

The New York Police Department is planning a heavy presence for the city's July Fourth celebrations.

NYPD chief spokesman Paul Browne said Wednesday the department's entire air and sea fleets will be deployed on Thursday: That's seven helicopters and 16 boats.

He said Harbor Unit boats will help direct traffic jams after the Macy's Fourth of July Fireworks 2013 show.

Browne said that before the show begins over the Hudson River, police will conduct sweeps of underground garages and surrounding streets. He said counter-terrorism officers will remove all trash cans from the viewing areas and use dogs that can detect explosives and explosive residue.

Browne said 38 mobile cameras purchased after the Boston Marathon bombing will be fixed to light poles and other areas to monitor the crowd.

In Boston, many people say they won't skip the public July Fourth party just because authorities have said that the Boston Marathon suspects first considered attacking that day.

Authorities are ramping up security, but some holiday revelers along the Charles River say they won't be giving in to fear of terrorism by staying away from celebrations.

The holiday event will mark the city's first major public gathering since the April 15 attack.

Boston Pops conductor Keith Lockhart also says Thursday's concert and fireworks show will be a perfect time for people to come together as Bostonians following the bombings.

Gov. Deval Patrick says he's looking forward to attending the holiday event and believes it will be a great day.