The Port Authority will install $120 million worth of anti-terror protective barriers around passenger terminals at JFK, Newark and La Guardia airports, according to its new budget.

Meanwhile, the agency will eliminate 200 jobs by attrition and also ground its two helicopters in a bid to save cash in its $7.2 billion budget.

Scrapping the Sikorksy helicopters and their three civilian pilots will reap about $5 million each year, documents show.

The 200 eliminated positions will come from around the agency and will bring the head count to its lowest point in 40 years.