how is it you can say it is only at malstrom.-- you have talked about training versus qualification proficiency. these tests you are describing. are they indeed training tests and not qualification participants he test. given all of this and given what you have heard across the board how is it you don't have a command climate problem? they are getting it from somewhere. >> let me start. then we can talk more about testing. i do believe we have systemic problems. based heavily on what i have heard and learned the last few weeks there is a holistic approach on this action plan so i do believe there are climate issues, and part of that will be assessing commanders how did this happen, and that will be part of the follow-up and accountability as well. >> how do you know you don't have cheating at other places? >> immediately after this happened we gave no notice test to the entire force. it was developed by higher headquarters. it was distributed to all crew members. they averaged 95% on the test. subsequently we tested during a nucl

>> reporter: those 34 represent just under 20%-- one in five-- of the missile launch officers at malstrom. >> we've decertified all 34 officers in involved. they're restricted from missile crew duet, their security clearances have been suspended around their investigation into the level of their individual wyoming. but all of the air force's 600 launch officers will be retested. so far, 100 have taken it and 97 passed. the alleged cheating was discovered in the course of a drug investigation which has implicated three launch officers in the possession of recreational drugs. >> pelley: david martin at the pentagon for us tonight. david, thank you. a critical report tonight blames american diplomats and intelligence officers for failing to prevent the attack on the u.s. mission in benghazi, libya. ambassador chris stevens and three other americans were killed. the report is the result of a bipartisan senate investigation. here's nancy cordes. >> reporter: the senate intelligence committee handles documents so sensitive it mostly holds its hearings behind closed doors. after reviewing the be

head of the air force along with the service chief of staff revealed that 34 air force officers at malstrom air force in moontd are now under investigation for drug use and cheating on exams. in charge of the land based nuclear icbms. >> this is absolutely unacceptable behavior and it is completely contrary to our core values in the air force. as everybody knows the number one core value is integrity. >> 16 officers shared the answers of a monthly test by texting them to each other. another 18 knew about the cheating but failed to report it. >> we have decertified all 34 officers involved. they are restricted for missile duty, the level of their individual involvement will continual. >> the command and control system for u.s. nuclear missiles dates back to the 1950s. but to this day nearly 600 air force officers oversees the missiles, nearly 5% of the nuclear force has been caught in the cheating scandal. air force officials insist the mission has not been compromised. >> i want you to know based on everything i know today i have great confidence in the security and the effectiveness of our