Multiple recent reports from various news sources confirm that American contractors guarding aid distribution sites in Gaza have been firing live ammunition as Palestinians seek food.
US contractors say their colleagues are firing live ammo as Palestinians seek food in Gaza.

FactVerify
Source: factverify.com
What the Evidence Shows
The claim states that US contractors say their colleagues are firing live ammo as Palestinians seek food in Gaza. The search results provide multiple corroborating sources reporting that American contractors, specifically those guarding aid distribution sites in Gaza, have used live ammunition and stun grenades against Palestinians scrambling for food. These reports come from several independent news outlets including Yahoo News, CTV News, and others, all citing anonymous US contractors or eyewitness accounts.
The consistency across these sources and the specificity of the details (such as the involvement of contractors subcontracted by organizations like the Gaza Humanitarian Foundation) support the claim's accuracy. There is no contradictory information in the search results to dispute this claim.
Therefore, based on the available evidence, the claim is true.