; (B) in subclause (I), as designated by subparagraph (A), by striking the Under Secretary and inserting the Administrator ; and (C) by adding at the end the following: (II) Use of facilities for requalification The Administrator shall allow a Federal flight deck officer to requalify to carry a firearm under the program through training at a Transportation Security Administration-approved firearms training facility utilizing a Transportation Security Administration-approved contractor and a curriculum developed and approved by the Transportation Security Administration. ; and (2) by adding at the end the following: (iv) Periodic review The Administrator shall periodically review requalification training intervals and assess whether it is appropriate and sufficient to adjust the time between each requalification training to facilitate continued participation in the program under this section while still maintaining effectiveness of the training, and update the training requirements as appropriate. . (c) Training review Section 44921(c)(2) is amended by adding at the end the following: (D) Training review Not later than 2 years after the date of enactment of the TSA Modernization Act , and biennially thereafter, the Administrator shall review training facilities and training requirements for initial and recurrent training for Federal flight deck officers and evaluate how training requirements, including the length of training, could be streamlined while maintaining the effectiveness of the training, and update the training requirements as appropriate. . (d) Other measures to facilitate training Section 44921(e) is amended— (1) by striking Pilots participating and inserting the following: (1) In general Pilots participating