The 3 ways I've got that the next 18 months can go are:
1. Cut transmission down to low levels followed by aggressive tracking, testing, and tracing (led by the federal government), wait for a vaccine.
2. At least 1.5 million people and more than likely 3 million people die nationwide and the economy is destroyed because it's impossible to open anything when that many people are sick for weeks to months and the Health Care system is paralyzed. Hope that transmission doesn't re-start if people begin losing immunity, because then the death toll is way more than 3 million.
3. Keep everything, schools, businesses, closed for the large majority of the next 18 months, wait for a vaccine.
Literally everything we've seen for the last 7 weeks tells that exact same story. No magic bullet has appeared, no magic drug or treatment, there's a giant pile of bodies and every bit of evidence says that the 1-2% death rates seen in January will absolutely hold, including most notably the nightmare that New York City became. Spots like Singapore and Hokkaido show clearly that if there are any areas that open up even to a minimal degree without aggressive tracing, the Virus will begin spreading rapidly there again, forcing new shutdowns with much larger case totals.
If you've got a better idea, please let me know.