Rio Grande - ROLE 1: Lt. Col. Kirby Yorke (John Wayne). Posted on the Texas border, Lt. Col. Kirby Yorke's regiment must defend settlers from aggressive Apaches who evade capture by escaping into Mexico, where American troops cannot follow. The Army finally sends reinforcements, but only 18 men - including Yorke's estranged son - not the 180 he requested. Note: Yoostar scenes are often available both as single video clips and in scene packs. Please consider your purchase carefully before downloading.