What is the fine-grained topic of the following text: With skills learned during an extended period serving as an engineer in Germany’s Bundespolizei Aviation Group, Jager - AKA Marius Streicher - is a Defending Operator now deployed as part of the GS9 special ops unit. Only return the topic.
Profile of Jager (Marius Streicher), a Defending Operator in the GS9 special ops unit