defense news" while reporting from the international air tattoo immediately before farmer spoke to jeff fabiano about the challenges the company faces in the final stages before the f-35 becomes operational. the first question, what is causing delays in the software that supports sustainment of the system? >> alice is a critical element of flying in operating the f-35, and we're developing the latest implementation known as two -- 202. it will give them an opportunity them to deploy different configurations, all things we think they are -- are improvements. software operations working through, ensuring that information is working well before we turn it to the customer. we are taking extra time to make sure it is working before we feel we will give the users opportunity to work out any bugs. babione also address an issue that has gained headlines. he spoke about an air force assessment of alternative. babione: we share concerns pit we have confidence it will be certified for always, sizes, hike up pilot the f-35 will be certified for, and we think that will be done by the end of this fall. we ha