41 Training and education, namely, in-person and online seminars in the field of detection and location of electromagnetic interference; educational services, namely, conferences and seminars in the field of detection and location of electromagnetic interference; Training and education, namely, in-person and online seminars in the field of detection and location of radio frequency interference; educational services, namely, conferences and seminars in the field of detection and location of radio frequency interference and distribution of course materials in connection therewith in printed or electronic format