They can apply on-line or by mail and the cost is only $2.
The Federal Aviation Administration says they are doing this for durability and security.
Spokesperson Roland Herwig also says it should be no surprise for pilots.
"We've been working on this since 2003 we've been starting to convert and by now over 90 percent of pilots have converted."
McMillen believes too many people still don't know about it and worries about what could happen.
"To be caught flying without a valid license is worth $10,000 and a year in jail," McMillen said.
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