ship’s  personnel  proficiency  in  detecting,  tracking, and successfully engaging hostile threats. The instructions that set forth specific training re- quirements  include  training  and  evaluation  proce- dures  for  conducting  (1)  readiness  and  operational evaluations, (2) composite training unit exercises, (3) fleet exercises, and (4) battle readiness exercises. Readiness  and  Operational  Evaluations Readiness and operational evaluations are a ma- jor  part  of  fleet  exercises  to  provide  advanced  train- ing  and  to  examine  fleet  capabilities  and  limitations in  warfare  aspects.  Normally,  the  duration  of  the exercise is 8 to 10 days, with the first 3 or 4 days de- voted  to  warm-up  operations.  The  exercise  scenario and the emphasis on particular warfare areas are ad- justed to the number, type, and training state of the participants.   Specific   accomplishment   objectives   in a given readiness and operational evaluation are pub- lished in the instruction letter for that exercise. All  readiness  and  operational  evaluation  exer- cises  have  the  following  broad  objectives: To  train  the  fleet  in  various  aspects  of  naval warfare  and  confrontation  at  sea,  with  emphasis  on improving  command  and  control. To  provide  specialized  predeployment  train- ing for anticipated fleet operations. To  identify,  measure,  and  analyze  the  practi- cable  extent  of  fleet  performance,  capabilities,  and limitations, and to develop appropriate recommended corrective  action. To develop and test new tactics and doctrine. Composite Training Unit Exercises The composite training unit exercise has the fol- lowing  overall  goals: To  enhance  the  readiness  of  participating units. To  provide  predeployment  training. To  test  and  evaluate  new  doctrine  and  proce- dures. To  stimulate  development  of  new  concepts  in naval  warfare. Ships   participating   in   composite   training   unit exercises  should  make  maximum  use  of  underway time  to  the  operating  area  for  training  and  drilling. This  en  route  period  is  an  excellent  opportunity  for the  combat  systems/weapons  team  and  participating units  to  perfect  their  skills  in  the  tactics  and  pro- cedures  of  the  upcoming  exercise. In addition to intraship training, the units can also train in multiship operations and evolutions in prep- aration  to  accomplish  the  stated  exercise  objectives. A  composite  training  unit  exercise  has  the  fol- lowing  specific  objectives: To permit participants to conduct exercises in a multithreat environment to enhance readiness. To  complete  the  maximum  feasible  type  com- mander  exercises  required  to  achieve  unit  training readiness  levels  and  special  predeployment  require- ments; To  achieve  unit  familiarity  and  expertise  in fleet report requirements and procedures required by higher  authority. To  train  in  operations  under  the  minimum radiation concept, radiating electronic and communi- cations equipment necessary to accomplish a specific mission  or  task,  while,  at  the  same  time,  ensuring safety. To identify all levels of performance degrada- tion due to ship and system incompatibilities. To  train  and  increase pects of operational security. proficiency  in  all  as- 5-2