TROY, AL - MAY 03: U.S. President Joe Biden speaks to employees at Lockheed Martin, a facility which manufactures weapon systems such as Javelin anti-tank missiles, on May 3, 2022 in Troy, Alabama. The Biden-Harris Administration is providing these weapons to Ukraine to defend against the Russian invasion. (Photo by Julie Bennett/Getty Images)

TROY, Ala. (AP) — President Joe Biden is crediting the assembly line workers at a Javelin missile plant for doing lifesaving work in building the antitank weapons that are being sent to Ukraine. He says the missiles are stifling Russia’s invasion as he is making a pitch for Congress to approve $33 billion so the U.S. can continue to hustle aid to the front lines. Biden’s Tuesday trip to the Alabama factory that makes the Javelin weapons system is drawing attention to a growing concern as the war drags on: Can the U.S. sustain the cadence in shipping vast amounts of arms to Ukraine while maintaining the healthy stockpile it may need?