Don’t know if these are specifically for the NATO conf. Most delegates travel on the shuttle from London,but the below have been in EDI over the last week or so:
87-24584 UH-60A
87-24647 UH-60A
01-0076 C-37A USAF
CE-02 ERJ145 BelgAF
N90R B737
73-1683 C-9C

Also at GLA still is a USAF C5 Galaxy (Not connected with the conf. i believe)