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.
1 Southwest Airlines requires that all flight attendant applicants are at least 20 years of age, have a high school diploma (or equivalent), can lift 50 pounds, and have proper authorization to work in line with the Immigration Reform Act. 2  Resumes are kept on file with Southwest Airlines for up to 6 months.