Michigan’s two Democratic senators wrote Monday to President Donald Trump, thanking him for his recent “commitment” to base a new fighter mission at Macomb County’s Selfridge Air National Guard Base and offering to work with him on the effort to replace the A-10s that are being decommissioned there.

The letter was sent a day before Trump’s scheduled return to Michigan for the first time since winning the battleground state in November and after remarks he made in the Oval Office over two weeks ago. At that time, Trump stated that he was working with Michigan leaders to keep Selfridge open and teased the possibility of new fighter jets for the base, such as F-16s or F-35s.

“I think we’re going to be successful, governor. I think we’ll be very successful there,” Trump said about Selfridge in remarks in the Oval Office on April 9 with Democratic Gov. Gretchen Whitmer and Republican state House Speaker Matt Hall standing near the president’s desk.

“It’s a great piece of property. It’s a great location, and it’s a great state. So I think we’re going to come back with a very good answer.”

Trump’s remarks have fueled speculation in Michigan circles in recent days that the president could make an announcement about the future of Selfridge during his visit to Macomb County today for an evening rally marking his 100th day in office.

The president is scheduled to land at the air base ahead of the rally, and “we are all waiting with great optimism that there will be a very big announcement at Selfridge,” said former U.S. Rep. Candice Miller, who represented the Selfridge base for 14 years in Congress and is now the honorary base commander.

“I really think — fingers crossed — that we are going to hear something very positive tomorrow,” said Miller, who is now Macomb County public works commissioner.

“I wouldn’t be a bit surprised if we hear that we’re in the hunt or we’re going to get F-16s or perhaps F-35s.”

Miller speculated that it makes sense militarily and strategically to withdraw a squadron of fighter aircraft from Europe — where other NATO members are expected to bolster their own defenses — and send it to Michigan.

“If that were to happen, it would be transformational for this area,” Miller said.