Who is [10]? Answer below.
Q/POTUS-1
Q/POTUS-2
Q/POTUS-3
Q/POTUS-4 [10]
Q/POTUS-5
means
Pres #41 George Bush
Pres #42 Clinton
Pres #43 GW Bush
Pres #44 Obama [10]
Pres #45 Trump
[10] is Barack Obama
The successful extraction at ATL airport was either BO himself or related to BO.