Wisconsin coach Paul Chryst said before a spring football season is planned, there has to be a discussion about fall 2021. He said conversations about a spring football season have been minimal, but there has been a theme. If the NFL does nothing to accommodate spring college football some of the sure-things are almost certain to leave. There is so much to sort out, including the NCAA signing off on a spring football season. At this point in time, we'll see.__Follow Ralph D. Russo at https://twitter.com/ralphDrussoAP and listen at http://www.westwoodonepodcasts.com/pods/ap-top-25-college-football-podcast/___More AP college football: https://apnews.com/Collegefootball and https://twitter.com/AP_Top25

President Donald Trump calls them super-duper" missiles though theyre better known as hypersonic weapons. Critics argue that hypersonic weapons would add little to the United States ability to deter war. Trump occasionally mentions his interest in hypersonic weapons, sometimes without using the term. Russia last December said its first hypersonic missile unit had become operational. But critics see hypersonic weapons as overkill and potentially an extension of the arms race that led to an excessive nuclear buildup by the U.S. and the Soviet Union during the Cold War.