NASA researchers estimate Tonga blast at 10 megatons // Texas synagogue hostage-taker had stayed in near by homeless shelters // Microsoft buys Activision Blizzard for $68.7 Billion // White House soft-launches COVID-19 test request website // Hawaii is requiring tourists to have booster shot to be ‘fully vaccinated’ // Cracker Barrel ordered to pay millions to a customer who was served chemicals.