Note that the machine wasn't (only) an FTP server; it let anyone who wanted get at a shell with compilers, debuggers, tools, etc., so that the alleged Bad Guys from third world countries in a country with IP connectivity on a student visa could run their nuclear bomb design/simulation programs there.... never mind that the simulation for the Manhattan Project was done with a horde of clerks, decks of punched cards, and a big bunch of IBM card tabulators (see Feinmann's autobiographies for more details..). This looks annoyingly like a variant of the "initiative" a few years back where the State Dept. wanted makers of high performance workstations to export them only in a locked-down configuration capable of executing only the applications they were originally purchased to run; compilers need not apply... fortunately, that died a quick & quiet death. - Bill