42 Electrical engineering services; Mechanical engineering services; civil engineering services; Electrical engineering services in the field of communications infrastructure, electronic security systems, cyber security; Mechanical engineering services in the fields of fabrication and repair of naval ships, operations, welding, defense, combat, engine and cooling systems; Nondownloadable software for use in the field of military training exercises; Nondownloadable software in the field of learning management and talent management for measuring workforce competency and proficiency; Engineering services, namely, system engineering services in the military and defense fields; Engineering services, namely, system and digital engineering services in the defense and military fields; Engineering services, namely, system and digital engineering services in the military and defense fields in connection with radars, displays, weapons, missiles, rockets, and computer programs; Software engineering services; Software engineering services in the defense and military fields