The Jewish Community Center in Whitefish Bay has received its fourth threat since late January. The center was closed for about two hours late Sunday morning after getting an email threat, and it reopened about noon after nothing dangerous was found. More than 100 threats have been made to Jewish facilities throughout the U-S since 2017 began. On the statewide T-V show “Up Front with Mike Gousha (goo shay’) Sunday, C-E-O Mark Shapiro said his center was as safe as before the bomb threats started — and while some members have not visited as often, others are showing up more often to show their support.