No, they're a new kind of quick mission. Just set up the mission as you normally would do and select "scramble" as the mission type. You will start on the ground, with enemy approaching your field.
Or, of you want to practice takeoffs and landings, set up a scramble mission with no enemy planes.
Intel i5 2500K CPU,Asus P8Z68vlx MB (turbo) GTX 460 2G, 8G DDR3, Win7 Home Premium 64 bit- "Níor bhris focal maith fiacail riamh."