Direct Dartmouth to strengthen its procedures and internal controls for reviewing and charging travel expenses. Specifically, Dartmouth could consider: • Establishing policies or procedures that justify charging travel expenses to specific NSF awards by confirming travel charged to an award contributes to the award objectives. This could also include providing best practices on how to document any credits or refunds received as a result of cancelled or altered travel to ensure refunds and credits are returned to the appropriate funding source(s). • Implementing additional reviews for all airfare purchases that require the reviewer to verify that all airfare charged to NSF awards are for economy class tickets and do not represent unallowable premium class airfare tickets. • Establishing controls to ensure that amounts reimbursed for lodging are based on actual receipts obtained after the trip is completed, rather than booking confirmations or invoices received prior to travel.