Blake, Mortimer, Calloway and Wingo go to see Kaufman at his office at SUFOS. Together they try to figure out what the invasion plan is by using the words found on Macquarrie's shoulder strap. They are joined by Dr Jeronimo Martinez who works at Los Alamos and who is keen to compare theories on nuclear physics with Mortimer. He reveals in passing that Los Alamos is Spanish for poplar tree. This leads the others to believe that Olrik's plan is to steal H-bombs and send them into the future from where they will be used to threaten the present time period.