A 16-year-old boy is facing charges after being accused of breaking an FDNY truck’s windshield and pulling a knife on firefighters Thursday morning in the Bronx.

Officials say the teenager threw a rock at the windshield of an FDNY fire engine in Allerton.

"He approached the driver, pulled out a large knife and tried to stab through the window,” said President of the FDNY Uniformed Firefighters Association Andrew Ansbro.

Engine 90 and Ladder 41 says they were responding to a call of an overturned car but had to come to an abrupt stop because of the assault.

They say the 16-year-old stabbed and attacked both apparatuses and tried to get in the cabin.

"Their first instinct was to probably get out of the area, then they realized the streets were filled with civilians and so they didn't want to leave this person that was targeting them, so they just kept rolling the rig up,” said Ansbro.

They say firefighters called police for help and when they arrived, the NYPD tells News 12 the teen tried to run away, but when an officer drew his gun, the teen dropped his knife.

Neither company made it to the scene of the car accident.

"Targeting fire department apparatus and personnel could have very devastating consequences to people that are expecting us to be available for a fire or another emergency,” said Ansbro.

The teen was taken to NYC Health +Hospitals/Jacobi for an evaluation and is charged with criminal mischief, menacing, reckless endangerment and criminal possession of a weapon.