Jane Ferguson:

Inside rebel territory in Yemen, the war rains down from the sky. On the ground, front lines have not moved much in the past three years of conflict.

Instead, an aerial bombing campaign by the Saudi-led and American-backed coalition hammers much of the country's north, leaving scenes like this dotted across the capital city, Sanaa, and beyond.

A few weeks before I arrived, this gas station was hit. Security guard Abdul Al Badwi was in a building next door when it happened. He says six civilians were killed.

Why did they target here?

Can't explain why they would have targeted something like this.

Elsewhere in the city, a government office building was recently hit. Another pile of rubble, another monument to the civilian deaths of this war.

When this building was hit, it was mostly clerical workers in offices who were injured. And you can still see their blood smeared all over the walls as they were evacuated after the airstrike.

In 2014, Yemeni rebels called Houthis seized the capital and much of the rest of the country. The Houthis are supported by Sunni Saudi Arabia's archrival, Shiite Iran, so the next year, the Saudis mobilized a coalition of Arab militaries to defeat the group.

The aerial bombing campaign has not managed to dislodge the rebels, but has hit weddings, hospitals and homes. The U.S. military supports the Saudi coalition with logistics and intelligence. The United States it also sells the Saudis and coalition partners many of the bombs they drop on Yemen.

In the mountains outside the capital, we gained exclusive access to the site where the Houthis store unexploded American-made bombs, like this 2000 pound Mark 84 bomb made in Garland, Texas. It landed in the middle of the street in the capital, we are told.

One of the men here told me where each was found around Sanaa.