New satellite imagery and flight tracking data show a base in central Jordan has become a key hub for the U.S. military’s planning for possible strikes on Iran. Imagery captured on Friday shows more than 60 attack aircraft parked at the base, known as Muwaffaq Salti, roughly tripling the number of jets that are normally there. And at least 68 cargo planes have landed at the base since Sunday, according to flight tracking data. More fighter jets could be parked under shelters. The satellite images also show more modern aircraft, including F-35 stealth jets, compared to the aircraft normally seen...