It's not like ISIS didn't know the attack on Mosul was coming. After all, Mosul is one of the last major cities in Iraq that the group holds. So the radical Islamic fighters prepared for the battle that is now raging on the outskirts of Mosul by doing a few things, including destroying the runways at the vital Qayyarah West Airbase, Iraq.
Qayyarah West sits within Iraq's Ninawa Province to the south of Mosul and is an obvious logistics base for an attack on the city.
U.S. Air Force Senior Airmen Timothy Williams, assigned to the 1st Expeditionary Civil Engineering Group, operates a jackhammer on a runway during repair operations at Qayyarah, West Airfield, Iraq, Oct. 7, 2016. (Photo and cutline: U.S. Army Spc. Christopher Brecht)
The same day that Iraqi forces captured the airfield in July, bloggers and journalists immediately predicted the role the base would play in the coming fight against ISIS.
There was just one major problem. According to a story by Army Sgt. 1st Class Robert Lemmons, ISIS had systematically destroyed the runways at Qayyarah West with explosives and heavy machinery for two years.
The C-130, one of the military's most versatile cargo planes, needs at least 3,000 feet of safe runway to make an assault landing. Even then, the short runway lowers the available total weight with which aircraft can land or takeoff.
So the Air Force needed to take a base with no usable runways and get it ready to take in tons of cargo in a short period. A team of engineers from the Air Force flew to the base to attempt the task. They undid two years of ISIS destruction in only three weeks.
A U.S. Air Force C-130J Super Hercules waits to unload logistical supplies in support of the fight for Mosul at Qayyarah West Airfield, Iraq, Oct. 22, 2016. This is the second aircraft to land there following completion of repairs to the runway after Da'esh damaged it. (Photo and cutline: U.S. Army Spc. Christopher Brecht)
The Air Force deployed a small team to assess the damage, then sent the full team to begin repairs. Over the three-week period, the airmen judged which parts of the runway were unsafe for operations, cut out those sections of asphalt, and then fixed just those spots.
"We show up, clear the debris out, get all the junk and everything out of there," Air Force Staff Sgt. Tyler Charles told a military journalist. "Then we dig down, if we have to, until we hit hard surface ground."
Once the engineers found hard surface, they ensured everything was level and firm, then rebuilt the section of runway from the ground up. And the airmen completed their work just in time. The first C-130s arrived on Oct. 21, less than a week after the Iraqi Army began their offensive to retake Mosul.
A U.S. Army M109A6 Paladin conducts a fire mission at Qayyarah West, Iraq, in support of the Iraqi security forces' push toward Mosul, Oct. 17, 2016. (Photo and cutline: U.S. Army Spc. Christopher Brecht)
The repaired runway provides a more robust logistical capability for the invasion, allowing more ammunition and other supplies to fly in. And Qayyarah West has served the coalition in other ways as well, such as housing the American Paladins providing artillery support to the Iraqi advance.