According to open-sourced data examined by Politico, it is estimated that the US has sent Ukraine 1,400 Stinger anti-aircraft missile systems and 4,600 Javelin anti-tank missiles since January. US allies such as Latvia, Lithuania, Estonia, and the Netherlands have also sent either Stingers or Javelins to Ukraine that the Pentagon is looking to replace.

Javelin missiles are made through a partnership between Lockheed Martin and Raytheon Technologies. Stingers are produced solely by Raytheon, the former employer of Secretary of Defense Lloyd Austin, who served on the board of the weapons maker before taking his post at the Pentagon.

Congress has already handed the Pentagon $3.5 billion to replenish its weapons stocks as part of the $1.5 trillion omnibus spending bill that President Biden recently signed. Sources told Politico that the Pentagon faces some hurdles in getting the missiles produced as quickly as they want and is considering invoking the Defense Production Act.