Why did Turkish military planes make repeated trips to Pakistan in 3 days?

Turkish military aircraft made repeated trips to Pakistan between August 19 and 21, with C-130 Hercules transport planes landing at Nur Khan airbase near Rawalpindi and Masroor airbase in Karachi, reports said. The sorties may be linked to the delivery of drones and related systems. Pakistan may have also received an HQ-series air defence system, India Today reported, citing sources.