It&#x27;s usually up to the discretion of the stewardess. NPR recently had a great piece on this.<p><a href="http:&#x2F;&#x2F;www.npr.org&#x2F;2016&#x2F;04&#x2F;23&#x2F;475388651&#x2F;when-it-comes-to-flight-safety-when-does-alertness-become-racial-profiling" rel="nofollow">http:&#x2F;&#x2F;www.npr.org&#x2F;2016&#x2F;04&#x2F;23&#x2F;475388651&#x2F;when-it-comes-to-fli...</a>