Roadblock

As we were driving to a friend's compound, we were waved over to the side of the road by a uniformed policeman packing heat (an AK-47). We parked the car on the side of the road and got out to see what was going on, because there were a lot of other cars parked and waiting. We heard sirens and a motorcade drove followed by a pickup truck full of more armed police. Then our illustrious professor remembered that the president of Guinea was visiting President Jammeh and they were driving by to get to the airport. Two heads of state in one day!