and dependent population in Guam. (D) Consider the impact of expanded access to Department of Defense support facilities in Guam to Federal Aviation Administration employees and their families on the ability of those facilities to provide services to military personnel and their families. (E) Recognize the Federal Aviation Administration’s vital role as the sole provider of radar air traffic control services for aircraft traversing into and out of the airspace near and above Guam the vast majority of which are military operations, Department of Defense aircraft, or other aircraft traveling to Guam in order to interact with Department of Defense facilities. (F) Review the existing authorities authorizing eligibility and access for non-military personnel and their dependents to Department of Defense support facilities, including health care facilities, commissaries, and exchanges, outside the continental United States. (G) Determine the applicability of those existing authorities to Department of Defense support facilities in the U.S. territory of Guam. (H) Outline the specific conditions on Guam, which may necessitate access to Department of Defense support facilities in Guam by Federal Aviation Administration personnel and their families. (I) Determine any changes in laws or regulations that may be necessary to authorize Federal Aviation Administration employees and their families access to Department of Defense health care facilities, commissaries, and exchanges in Guam. 575. GAO study on airline computer network disruptions Not later than 1 year after the date of enactment of this Act, the Comptroller General of the United States shall submit to the appropriate committees of Congress a report containing a review of the following: (1) Direct and indirect effects on passengers, if any, resulting from significant computer network disruptions of part 121 (of title 49, Code of Federal Regulations) air carriers between January 1, 2014, and the date of enactment of this section, including— (A) systemwide delays