Video clip WB52 showing the DH view with the caudal vena cava (CVC) and its expected “bounce” of 50% (change in diameter).  Note the greater than 3 to infinity lung rockets (ULRs) along the diaphragm.  The case was a puppy that was stepped on presenting respiratory distress from severe lung contusions (ULRs indicate lung contusions in trauma until proven otherwise).  Global FAST (AFAST, TFAST and Vet BLUE) helped dictate appropriate therapy by ruling out hemoabdomen, ruptured urinary bladder, diaphragmatic hernia, hemothorax and hemopericardium.  The dogs distress was from severe lung contusions.