Exercising/Testing/Validating the Communications Element of the EOP Actions for 'Week 10: Exercising/Testing/Validating the Communications Element of the EOP'

What is your view regarding the importance or potential benefits of drills and exercises for testing and validating the communication element of EOPs, or of crisis communications in general? Find and describe an example of an organization that somehow demonstrated that it seriously engaged in testing and validating their communications plans through drills and exercises, or failed to do so. This may be an organization you are personally familiar with, or one you found through online research.  

1 1/2 pages with 3 references, APA