It looks like they just recently ended a 5.60% 6-month special that I posted on last month. The credit union continues to have some competitive long-term CD rates including a 5.60% APY 7-year CD and a 5.65% APY 10-year CD with a minimum of $10K.
Field of membership includes those who work for government or financial institutions in San Antonio or those in college in San Antonio. You can also be eligible via Select Employer Groups in San Antonio and in Houston and via family. See site for details. Branches are located in both Houston and San Antonio.
The credit union is federally insured by the NCUA. It's a large credit union with $2 billion in assets and 235,449 members.