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.
Children older than 16 and traveling alone are required to have a government-issued photo ID in addition to the proof of passport application status.Acceptable confirmation of a passport application may be found at the Department of Stateâs website at http://travel.state.gov/passport/get/sta... Source(s):est Answer: For domestic travel the guidelines are below: Children Children traveling with adults on domestic flights may not need a photo ID card; however, airlines may require the accompanying adult to show proof of age in the form of a birth certificate.