During a panic stop the brakes failed and the pedal went to the floor resulting in a rear end collision. The vehicle is currently with the mechanic but he believes it a failed brake booster. When I checked for related problems it seems the same brake booster (EL3Z-2140-E) in my 2014 F150 V8 5.0L was used in the same year 3.5L but yet the recalls (16S24 and 20S31) didn't include my vehicle