If you think there were problems with Redhill organising travel, Visas, medicals, payroll, expenses etc, wait until you've tried to get these organised by the people in Houston.
Apart from trying to deal with a base that has a 6 or 7 hour time difference, you will find that your requests for travel will be totally ignored at first then sorted out at the last minute with you getting tickets and routings that will be totally different to those asked for.