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While the aid effort continues to ramp up, many in the typhoon-ravaged nation are still waiting for food, water and adequate shelter. "Nothing. Nothing happened," one survivor said Friday after waiting hours for food aid that never arrived.

Animated GIFs of satellite images show the before and after effects of Typhoon Haiyan in the Philippines.

In the shattered city of Tacloban, officials say most of the aid that has arrived hasn't yet gotten to the people who need it. There aren't yet enough trucks, there isn't enough gas and there aren't enough rescue personnel to distribute food, water and other necessities.

In Tacloban, a city of more than 220,000 people, some aid trucks are being looted as they arrive. Desperate for food, water and other essentials, many people are taking matters into their own hands.

Filipino TV reporter David Santos describes what it was like to ride out Typhoon Haiyan and then to see the devastation. In the area where he was, Santos says, law and order quickly broke down.

The State Department is spotlighting the mGive Foundation's online and cellphone donation tools. Millions have been affected by Typhoon Haiyan and large areas of the Philippines have been devastated.

As governments and aid groups rush help to the scene, they're confronting epic devastation. The top U.S. commander there has flown over the areas where Typhoon Haiyan hit. It looks "like a bomb went off," Marine Brig. Gen. Paul Kennedy tells Morning Edition.

As horrific as Haiyan has been, the disaster likely won't reach the same level of death and injury as the Indian Ocean tsunami of 2004 or Haiti's 2010 quake, disaster specialists say. Better communication systems in the disaster area are one reason why.

More than 600,000 have been left homeless and hungry by the devastating storm. In response, humanitarian agencies are mounting the largest relief operation since the Haitian earthquake in 2010. The biggest challenge right now is getting the basics — clean water and food — to the hardest hit areas.

Scientists say Typhoon Haiyan is one of the strongest ever recorded, though limited measurements may prevent them from declaring it as the record holder. Still, the storm was devastating: "We had a triple whammy of surge, very high winds and strong rainfall," says one climate scientist.