Wireless Resiliency and Flexible Investment Act This bill provides statutory authority for the 60-day time frame for a state or local government that receives a complete eligible facilities request to approve such request. Further, the bill makes other changes related to eligible facilities requests, including expanding the definition of such requests to include any requests for the modification of an existing wireless tower, base station, or eligible support structure that involves the placement, modification, or construction of equipment that improves the resiliency of the wireless tower, base station, or eligible support structure and provides a direct benefit to public safety.