With taking the per diem standard deduction and also deducting union dues, FAA Medical, luggage, uniform purchases and laundry, phone and internet bill, etc, I was able to deduct almost $7600 from my taxes. I didn’t do this the past years so now I am filing 1040x’s to recoup those expenses. You have three years you can go back. It’s totally worth it and it only took me one morning to do all the calculations for 3 years.