1Congressional research service.House Armed Services Subcommittee on Air and Land Forces Hearing 2009-05 ]. http :// armedservices, house, gov/list/ speech/armedsvc _ dem/abercrom- bieos052009, shtml.
2Ronald ORourke. Air Force F-22 Fighter Program: Background and Issues for Congress [ 2009-09- 11 ]. http://www, fas. org/sgp/ crs/weapons/RI_31673, pdf.
3Jeremiah Gertler. F-35 joint strike fighter (JSF) program: background and Issues for congress, [2009-12- 22]. http://www, fas. org/sgp/crs/ weapons/RL30563, pdf.