title: EF-5
text: # EF-5
  
  EF-5 may refer to:
  
  * 18F-EF5, a chemical compound used in oncology research
  * EF5, the highest rating on the Enhanced Fujita scale of tornado strength
  * Milwaukee Road class EP-1, EF-1, EF-2, EF-3, and EF-5, a type of railroad engine
  