DCA now hasTSA Pre-Security check is available for select frequent flyers and for military active-duy service members (contact TSA 571-227-2829). It is presently available at Terminal B, South checkpoint-for Delta Airlines.
Australian cattle dogs, also known as blue heelers, are herding dogs. The nickname blue heeler comes from the unique coat color of the breed and his habit for nipping at the heels of the livestock with which he works. The blue heeler is friendly and sociable, making him a great pet.
Heel toe downshifting is for cars without synchronizes. Non synchronized transmissions aren't modelled in forza as far as I know, so its not required. That said, it is a helpful thing to learn if you ever drive a car with worn out synchros. Its a common issue in first gear in 914s for example.