Selfridge Air National Guard Base is planning a series of tests of its sirens and outdoor announcement system.
Officials at the base in Macomb County's Harrison Township say people on or near the base may hear tests between 9 a.m. and 11 a.m. Friday. The so-called giant voice loudspeakers and sirens are used to notify personnel in the event of an emergency.
The base is home to the 127th Wing. Democratic U.S. Sen. Debbie Stabenow of Michigan announced Wednesday that the base is expected to keep its A-10 aircraft unit and refueling tankers under the latest version of the defense authorization bill.
The bill includes hundreds of millions of dollars in military spending for Michigan. Proposed cuts that would have hit Michigan bases including Selfridge were scrapped earlier this year.