For years, California lawmakers and transit leaders have requested billions of dollars from the federal government to temporarily double L.A.’s bus fleet and support public transportation for the 2028 Olympics and Paralympics.

Those calls have grown increasingly desperate in recent months, with Los Angeles Metro saying time is running out to execute its plans.

Now, the transportation agency says that if it doesn’t get a guarantee that the money is secured by the end of the year, it won’t provide the extra buses. Instead, it would leave private Olympics organizing committee LA28 to come up with a new plan.