Pakistan Air Force (PAF) and Turkish Air Force actively participated in the two weeks long exercise which commenced from 15 October while the United Kingdom and Uzbekistan air forces have also been invited as observers, reported 24NewsHD TV channel. 

https://twitter.com/DGPR_PAF/status/1453641876234452992 

Also, "Distinguished Visitors Day" was observed during the ongoing multi-national air exercise “ACES Meet 2021-2” on Oct 27th at an operational Air Base of Pakistan Air Force (PAF).

Air Vice Marshal Imtiaz Sattar (Cdr AFSC), Maj Gen Asif Mehmood Goraya (GOC 3 AD Div), “Air Vice Marshal Shahid Mansoor Jehangiri (DG JO), Air Vice Marshal Kashif Qamar (DG Log), Air Vice Marshal Ikram Noor (ADV to CAS (A)), Air Vice Marshal Asim Rashid Malik (DG AERO) and Rear Admiral Naeem Sarwar (DG PR (N)) was present on the occasion. 

The dignitaries appreciated the operational preparedness of the participating forces and conduct of the exercise.

“The exercise would further strengthen and promote the friendship and cooperation between the participating air forces. Military dignitaries from participating countries were also present at the occasion,” said Pakistan Air Force Spokesperson.