Uhh disaster relief? Humanitarian aid? The US military might be one of the best logistical avenues for dispersing aid in the world.
Militarily - Iraq under Obama. Liberia in 2000. Kuwait and Saudi Arabia in the 90s. The Philippines multiple times. Lebanon and South Korea in the 50s. Most notably WWII.
Those are the ones off the top of my head.
Despite what the Internet wants to tell you about American intervention, it is often requested by governments under threat.
You're gonna snap back about something something imperialism I can feel it but as I said above, most Americans don't really want to be doing that at all. It is often America is looked to for aid both humanitarian and militarily and for good reason, the Ebola outbreak, various famines, the United States dedicated more effort to eradicating AIDS/HIV and malaria. So yeah. People looked to America for help quite often.