Do I need TRX to send USDT TRC20?

Could you please clarify for me if I require TRX to facilitate the transfer of USDT TRC20? I'm not entirely sure of the technicalities involved in this process and would appreciate your expert insight. Is TRX a necessary component for sending USDT TRC20, or are there alternative methods available? If TRX is indeed required, could you also explain why it's necessary and how it functions in this particular transaction? Thank you for your time and assistance.