Direct UCSF to strengthen its administrative and management processes and procedures surrounding the approval of travel expense reports. Updated procedures could include: Conducting annual training that addresses how to ensure per diem expenses are appropriately reimbursed; Establishing controls within its travel reporting system to ensure costs associated with travel occurring after an award expires are not charged to the award; Requiring travelers to document the business purpose of each day of a planned trip before purchasing airfare, in order to enable UCSF to evaluate whether it must perform a travel comparison to support that airfare costs did not increase as a result of personal travel; and Implementing additional reviews for all airfare purchases that require the reviewer to verify that airfare complies with the Fly America Act and relates to economy class airfare prior to the expenses being charged to NSF awards.