The cargo flight by Challenge Airlines Israel is scheduled to depart from JFK at 2 p.m. on Saturday and land in Ben Gurion Airport in Tel Aviv on Sunday, according to flight information. The manufacturer of the materials is not known, but the cargo’s sender is listed as deriving from a Los Angeles ZIP code. While other weapons-related shipments have been sent from JFK to Israel, Saturday’s cargo flight is the first confirmed shipment of nitrocellulose and the largest single shipment of explosives to pass through New York City’s busiest airport, said journalist and lawyer Roman Shortall, co-founder of The Ditch.