HERO  ORDNANCE  CLASSIFICATIONS The susceptibility of ordnance to RF environments is determined by a testing program sponsored by the Naval  Sea  Systems  Command  (NAVSEASYSCOM). Tests  are  conducted  in  the  maximum  RF  environment the  ammunition  or  ordnance  systems  maybe  subjected to in its stockpile-to-launch sequence. This data is the basis for the three HERO classifications assigned to ordnance-HERO-safe   ordnance,   HERO-susceptible ordnance,  and  HERO-unsafe  ordnance. HERO-Safe  Ordnance An ordnance item is classified as  HERO safe  if it meets the following criteria: Percussion  initiated Sufficiently  shield  protected  so  all  EEDs contained by the item are immune to adverse effects (safe and/or reliable) when the item is used in its expected RF environments. General HERO requirements are observed. HERO-Susceptible  Ordnance An   ordnance   item   is   classified   as   H E RO susceptible   if  proved  (by  tests)  to  contain  EEDs. HERO-susceptible  ordnance  can  be  adversely  affected by RF energy. The safety and/or reliability of the system is in jeopardy when the system is used in its expected RF environments. A1. A2. A3. A4. HERO-Unsafe  Ordnance An ordnance item is classified as  HERO unsafe if it meets the following criteria: Its internal wiring is physically exposed Tests are being conducted on the item that result in additional electrical connections to the item. EEDs that have exposed wire leads are handled or loaded The item is being assembled or disassembled. It  is  disassembled HERO EMISSION CONTROL (EMCON)  BILL Ordnance items classified as HERO unsafe are protected from electromagnetic radiation by putting them in a completely enclosed all-metal container. NOTE:  Ordnance  in  a  wooden  or  plastic container or on a metal pallet is as exposed as if the container or pallet were not there. HERO-unsafe  ordnance  should  NEVER  be exposed   to   an   RF   environment.   However,   the requirement  for  assembly,  disassembly,  handling, loading,  and  unloading  exposes  ordnance  to  some degree. If exposure cannot be avoided, ordnance should be  exposed  only  in  essentially  RF-free  designated regions, such as below deck or in RF-shielded buildings. The  commanding  officer  is  responsible  for  making sure that  HERO-unsafe  ordnance is not handled in RF environments. Sometimes operational commitments require  HERO-unsafe  ordnance  to  be  exposed  to  RF REVIEW NUMBER 4 ANSWERS TO QUESTIONS Q1. THROUGH Q4. The weapons staging area on the flight deck located between the island and the starboard catwalks is known as the  bomb farm. A  pier-side  weapons  movement  of  ammunition  loaded  onto  an  aircraft  carrier  is authorized  in  emergency  situations  when  authorized  by  NAVSEASYSCOM  or  to conform to the ship's sailing schedule. Conventional  replenishment  (CONREP)  and  vertical  replenishment  (VERTREP) are used to transfer ammunition at sea. When VERTREP is being used to transfer ammunition between ships, transfer is accomplished  by  helicopters  using  slings  or  cargo  nets. 11-32