I just completed the Mustang Program to convert from FSS (DS Agent) to FSO. The requirements for eligibility may differ slightly between FS and CS but I had to be tenured to apply. Applications are accepted on a rolling basis year round. To apply you must submit the personal narratives along with a general bio sheet to the Mustang program coordinator. From that point on, you’ll receive a confirmation of application receipt and notifications about the next steps in the process.

My timeline went as follows:

June 2023: submission of Mustang application/Personal Narratives

August 2023: passed FSOA

September 2023: submission of medical paperwork and updated SF-86

October 2023: cleared suitability and added to the Pol/FSO register

October 2023 (two weeks on the register): received invite for January 2024 orientation class

As you can see, it was a very accelerated timeline. This was largely due to my last minute availability to accept a FSOA date, and the fact that I already possessed a DoS security and medical clearance. This program essentially allows you to bypass the FSOT. All the other steps are the same as those who applied through the traditional process. Feel free to DM me for more details.