A new effort to enhance New York subway security was announced by the Transportation Security Administration this week.
Transportation safety officers with security experience from area airports began assisting the New York Police Department with random screening of passengers' bags this Wednesday, according to police Deputy Commissioner Paul Browne.
"About a dozen TSA personnel with expertise in explosives detection are joining NYPD officers who have been screening bags for bombs in the New York subway system for the last three years," Browne said in a statement.
The officers will have handheld explosive detection devices available to them if they find something suspicious, a Homeland Security official told CNN.
The TSA says these Visible Intermodal Prevention and Response teams will help with random and unpredictable security measures, similar to other security systems at airports and transit stations across the country.
New York police introduced random bag screening at subway stations after the 2007 subway bombings in London, England.