I have not watched the clip but I think that this guy was an ADC to Kibaki. ADCs are at the very least Lt. Colonels.
If that is the case, the dude has risen just 4 ranks in 16 years. That's very realistic in the military.
Uhuru's current ADC is a brigadier. If 8 years from now atakuwa head of navy pia mtazusha?