He promised his administration would not allow Israel to run out of ammunition and interceptors for its Iron Dome air defense system, which is intended to shoot rockets out of the air before they strike Israeli territory.

Source: https://krdo.com/news/2023/10/10/biden-did-not-urge-restraint-in-gaza-in-call-with-netanyahu/

Israel is requesting precision guided bombs and additional Iron Dome interceptors from the US, according to an Israeli military official and a US defense official.

Source: https://krdo.com/news/2023/10/09/many-in-house-gop-caution-against-tying-israel-and-ukraine-aid-together/

Israel’s Iron Dome missile defense system fires interceptors at rockets launched from the Gaza Strip, in Ashkelon, southern Israel on Thursday.

Source: https://www.centralmaine.com/2023/05/11/israeli-airstrikes-in-gaza-strip-kill-2-palestinian-militant-commanders/

U.S. tests have shown such systems are far from infallible and that roughly three interceptors must be fired to bring down one incoming missile.

Source: https://www.independent.co.uk/news/china-ap-north-korea-beijing-chinese-b2320225.html