Into The Valley: This web site is authored by Charles D. Young, son of Col. Charles H. Young, war-time commander of the 439th TC Group. Colonel Young authored the book INTO THE VALLEY: The Untold Story of USAAF Troop Carrier in World War II. This 616-page book contains first-hand accounts of the airborne assault missions that spearheaded the invasions of North Africa, Sicily, Normandy, Southern France, Holland, the Rhine River crossing into Germany, and others. Included also are detailed maps and more than 600 quality photos.