Inability of an individual or a group to perform the given tasks up to the established standards. http://www.businessdictionary.com/definition/deficiency-performance.html.
TSA Requirements. The TSA requires that adult passengers ages 18 and older show valid photo ID at the security checkpoint. Children, however, are not required to present such identification. This does not mean, however, that children will be able to fly without it.
The photo on your ID might make you look 20 years older, or like a serial killer, but that horrendous ID is the key to making your flight on time. All adults need identification to get through an airport, and both your airline and the Transportation Security Administration will give your ID a glance. Once your ID has ...