Yemen's government is reinforcing Aden, its temporary capital, after Houthi rebels grabbed key hilltops nearby.
With the rebels moving closer, officials are putting up sandbags and tunnels around the city to keep it safe.
This all kicked off after the truce collapsed in July this year, leading to a spike in fighting.
Houthis seize coast near Bab al-Mandab
The Houthis have also taken over parts of Yemen's Red Sea coast, an area that's crucial for shipping and supplies near the Bab al-Mandab strait.
As they move east toward the Gulf of Aden and capture more ground like Al-Maqatirah, clashes are getting more intense, with both sides taking heavy losses while trying to control these important spots.