Why Are Corrections Officers Guarding this Abandoned Prison?

Where is your nearest FEMA camp? An NBC news crew may have stumbled across one in up state New York...

Executive Directive 51 was signed by George W. Bush in 2007, which gives the US Federal Government the power to declare impose martial law in the event a 'national emergency', giving the White House and Homeland Security (DHS) the ability to detain millions of Americans on US soil under Rex 84 and other military programs previously planned and run as inter-agency exercise drills.

A local NBC news crew claim they were simply filming a news package for the 129th anniversary of Ulysses S. Grant's passing (bizarre anniversary date, 129 years?), and then decided to use an abandoned prison as the backdrop while their news man was speaking to the camera. Quite the odd incident occurred however when a prison 'Lieutenant' rolled up to stop their filming.

According local NBC affiliate WNYT, Corrections employees who are still working at the empty prison made every attempt to stop Mark Mulholland from doing his job. This included a demand from a private contractor to 'get off state land' and then to hand over the tape or face arrest.

Why the secrecy? Why the stress on the part of the private prison contractors (from Wackenhut, or Serco?) when it's supposed to be 'closed'?