As CNN reports, citing a representative of the military facility, the man drove up to the checkpoint of the military facility where the recruits are training.
The guards ordered the man to stop, but he got out of the car with a knife and walked in their direction.
After a series of warnings, the guards had to open fire, the unknown person died on the spot.
The US Navy Investigation Department will investigate the incident.
Earlier, CNN, citing sources in the Pentagon, reported that the US military shot and killed two armed people at the Kabul airport.
The incident took place after armed men opened fire on US troops who are providing security for those evacuated from Afghanistan at the airport.