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.
Printed tickets are required for entry. To allow time to pass through a security screening, visitors should arrive 30 minutes early. Visitors age 16 and older must present a valid, government-issued ID with photo, such as a driver's license or passport. The name on the ID must match the name printed on the ticket. Photography is not allowed.