Locked on is a techno thriller novel written by tom clancy and co written with mark greaney and released on december 13 2011 the men of the campus must stop radical islamist from threatening russia with nuclear missiles and starting a war between pakistan and india john clark becomes a pawn in the election campaign between president ed kealty and jack ryan sr. Locked on is a techno thriller novel written by tom clancy and mark greaney released on december 13 2011 a direct sequel to dead or alive 2010 it is clancys first of three collaborations with greaney and features jack ryan jr and the campus as they try to avert a nuclear threat from a rogue pakistani general as well as his father jack sr in his presidential campaign. Locked on by tom clancy with mark greaney picks up where dead or alive left off and continues the tale featuring all of clancys popular characters including jack ryan sr jack ryan jr john clark ding chavez and dominic caruso some of the other regulars are also back in minor roles as well as the new operator to the campus team sam driscoll. Locked on a jack ryan novel by tom clancy mark greaney published by berkley buy from sku 9780425248607 tom clancys all star lineup is back jack ryan his son jack jr john clark ding chavez and the rest of the campus team are facing their greatest challenge ever . Locked on a jack ryan novel book 11 kindle edition by clancy tom greaney mark download it once and read it on your kindle device pc phones or tablets use features like bookmarks note taking and highlighting while reading locked on a jack ryan novel book 11