A CNN anchor forcefully pushed back Friday as she unsuccessfully tried to get a Florida Republican congressman and military veteran to retract his statement that President Joe Biden sees the troops as “disposable.” Brian Mast, who served in Afghanistan as an explosive ordinance disposal technician and lost his legs in 2010 when an IED detonated, joined Kaitlan Collins on “The Source.” Mast began the discussion defending former President Donald Trump’s comment that the Presidential Medal of Freedom is better than the Medal of Honor because the latter is often given to people who were wounded or…