The selection of architects or engineers with limited experience in designing and constructing correctional facilities is an invitation to serious problems. The selection of an experienced company is not sufficient. The experience level of the particular persons assigned to the project is crucial. The greatest challenge in jail construction is coordination of security components. This involves security hollow metal, locking systems, security electrical and electronics, and structure. Lack of coordination, from the contract documents and shop drawings through installation, is one of the greatest opportunities for delays and added costs. Failure to have components, materials, and equipment on site when they are needed is a common problem in all construction, but it is particularly critical in jail or prison construction. Also, unclear authority on site can be a serious detriment to progress. Because of the wide range of expertise required to monitor all aspects of a building program, inhouse staff do not generally have the experience and skills required to avoid all the problems mentioned. Inhouse staff may need to be supplemented with outside management services if significant construction problems are to be avoided.