<Tr> <Td_colspan="6"> Fortune 500 Companies in San Antonio, 2017 with San Antonio and US ranks . </Td> </Tr> <Tr> <Td> SAT </Td> <Td> </Td> <Td> Corporation </Td> <Td> </Td> <Td> US </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Valero Energy Corp . </Td> <Td> </Td> <Td> 37 </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> USAA </Td> <Td> </Td> <Td> 102 </Td> </Tr>

San antonio is one of the first major cities to have