Union Home Minister Rajnath Singh and his two junior ministers - Kiren Rijiju and Hansraj Ahir -may not be able to attend the annual NSG event on February 8 and 9. So the elite counter-terror agency has invited MoS (I&B) Rajyavardhan Rathore for the inauguration ceremony and MoS (External Affairs) M J Akbar for a lecture on the second day. With electioneering on in three states, including Uttar Pradesh, Singh has been busy campaigning while his deputies are holding the fort in Delhi.