New legal filings have offered a glimpse at the potential cost of President Donald Trump's planned UFC fight event on the South Lawn of the White House scheduled for this weekend.

The National Park Service, who oversees the South Lawn, filed a response to a federal lawsuit that sought to stop the event.

In their response, the documents listed seven agencies, including Homeland Security and the Federal Aviation Administration have "allocated significant resources and manpower." It also noted, hundreds of staff, between "700 and 900" came in daily for installation.