The camraman is hysterical as you can hear.
He keeps shouting "Ya Allah" which basically means "Oh my God" or as the youngsters amongst you prefer to shorten it "OMG".

A TNT Barrel Bomb is a more oftenly used home-made bomb. It's basically an empty petrol drum, filled with TNT, Fuel and nails. The barrel bombs are known for causing massive destruction, even worse than conventional bombs.

VOLUME WARNING