The United States has shipped about a third of its existing arsenal of Stinger anti-air and Javelin anti-armor missiles to Ukraine

Ellen Lord [...] said Stingers cannot be replaced “within the next couple of years” because its production line has been shut down. Even simple items, such as diodes, used to regulate voltage for these systems could be difficult to obtain.

“Even with Javelin, we are probably five years” away from replenishing that stock despite its manufacturing line remaining open, she added.

World class economy. 5 years to replenish 1/3 of its stockpile...