San Antonio is losing business conferences as a result of the coronavirus scare. A lot of companies and organizations are cutting back on employee travel, and it's costing San Antonio tourism revenues. On Tuesday, the National Society of Black Engineers postponed its convention, scheduled for late this month in San Antonio. The Self Storage Association last week canceled an annual conference that was set for next week. City officials say several other conferences set for this month or next month may be called off or postponed.