U.S. Secretary of State Antony Blinken, right, and Turkish Foreign Minister Mevlut Cavusoglu sit in a helicopter for a tour of earthquake stricken areas, in Turkey, Sunday.

ISTANBUL — U.S. Secretary of State Antony Blinken took a helicopter tour Sunday of one of the provinces worst-affected by the Feb. 6 earthquake in southern Turkey and northern Syria and pledged a further $100 million in aid to help the region.

"This is going to be a long-term effort," Blinken said at Incirlik Air Base, a joint U.S.-Turkish facility that has coordinated the distribution of disaster aid. "The search and rescue, unfortunately, is coming to an end. The recovery is on, and then there will be a massive rebuilding operation."

President Joe Biden announced $85 million for Turkey and Syria days after the earthquake that has killed more than 44,000 people in the two countries. The U.S. has also sent a search and rescue team, medical supplies and equipment.

The additional aid includes $50 million in emergency refugee and migration funds and $50 million in humanitarian assistance, Blinken said.

The secretary of state is making his first trip to NATO ally Turkey since he took office two years ago. Blinken arrived at Incirlik Air Base, near Adana, on Sunday after attending the Munich Security Conference in Germany.

He toured Turkey's Hatay province from the air with Turkish Foreign Minister Mevlut Cavusoglu. He was expected to meet with U.S. and Turkish service personnel, as well as Turkish military families affected by the earthquake.

Troops load aid onto a vehicle as U.S. Secretary of State Antony Blinken visits Incirlik Air Base near Adana, Turkey, on Sunday. Clodagh Kilcoyne/Clodagh Kilcoyne/Pool via AP hide caption