This can obviously lead to missed communication between an American flight crew and Egyptian control facility, for example. Another aspect of the communication problem can be attributed to seniority in civilian aviation, or rank in military aviation. This barrier, fear of communication, must be overcome in order for a flight to safely operate. Each crewmember should be able to make input to the flight without fear of reprimand. Each person should provide feedback and be willing to accept a suggestion from other crewmembers. The last subject I will cover in regard to communication is standardization. Procedures - checklists, operating instruction, and technical orders - are written in a standardized form to avoid confusion and establish a common language. This usually results in a barrier of communication in more experienced crewmembers. They can be so accustomed to the operating procedures that they expect everyone else to have the same level of understanding. This, combined with their usage of nonstandard verbiage can lead to deadly miscommunication in a worst-case scenario. Crew Resource Management 5 A third commonly referred to concept in crew resource management is "available resources". This can mean internal or external resources. Internal resources are things such as experience and knowledge, and having one does not necessarily require having the other. A crewmember can be experienced but not have a great deal of aircraft systems knowledge. Such as when in the military, as often happens, a pilot is transferred late in his or her career to another aircraft. That pilot may have over five thousand hours of flying experience, and even several hundred hours of combat flying experience. However, when arriving at a new assignment they have a very limited amount of aircraft systems knowledge in the "new" aircraft. This is also true for a civilian air carrier pilot who changes aircraft at some point in their career.