Please answer the given financial question based on the context.
Context: future regulatory developments future regulatory developments and actions could affect operations and increase operating costs for the airline industry , including our airline subsidiaries . see part i , item 1a . risk factors - " if we are unable to obtain and maintain adequate facilities and infrastructure throughout our system and , at some airports , adequate slots , we may be unable to operate our existing flight schedule and to expand or change our route network in the future , which may have a material adverse impact on our operations ," "our business is subject to extensive government regulation , which may result in increases in our costs , disruptions to our operations , limits on our operating flexibility , reductions in the demand for air travel , and competitive disadvantages" and "we are subject to many forms of environmental regulation and may incur substantial costs as a result" for additional information . employees and labor relations the airline business is labor intensive . in 2013 , salaries , wages , and benefits were one of our largest expenses and represented approximately 22% ( 22 % ) of our operating expenses . the table below presents our approximate number of active full-time equivalent employees as of december 31 , 2013 . american us airways wholly-owned regional carriers total .
||american|us airways|wholly-owned regional carriers|total|
|pilots|7900|4100|3400|15400|
|flight attendants|15000|7700|2100|24800|
|maintenance personnel|11300|3100|2400|16800|
|fleet service personnel|7400|5500|1700|14600|
|passenger service personnel|10300|6200|6400|22900|
|administrative and other|8200|5500|2200|15900|
|total|60100|32100|18200|110400|
.
Question: what portion of the total full-time employees of american are pilots?


Answer: The answer is:0.13145