Ever since the British Armed Forces have been airborne, people of African and Caribbean heritage have been flying with them. A Jamaican sergeant was piloting bi-planes over France with the Royal Flying Corps as early as 1917. Now the RAF Museum at Cosford is paying tribute to their bravery through a new exhibition. Called Pilots of the Caribbean, its launch was timed to coincide with this year's Black History Month. Callum Watkinson reports.