What Could Possibly Go Wrong?

when a scientist takes the H5N1 avian influenza virus, 

which is highly lethal but doesn’t transmit easily between people, and breeds it with the highly contagious H1N1 swine flu strain responsible for infecting tens of millions of people in 2009? well I can think of a few possible outcomes, 40 virologists, including leaders of the most high-profile experiments, declared that their voluntary moratorium is now over one year after public uproar forced them to pause, researchers who study H5N1 avian influenza by designing new, extra-virulent strains are set to resume their work, according to this article in Science published on 3 May 2013,

though the virologists might be ready, other experts say concerns about the experiments — overhyped benefits, a lack of independent review, dangers of accidental release — have not been addressed, raising the chances that the first pandemic H5N1 strain will come from a laboratory, so what would happen if the two are mixed to create a new, hybrid virus that is both highly lethal and contagious?

I mean what could possibly go wrong? apparently the team of scientists haven't seen the Hollywood movies about such dangerous experimentations and will go ahead to create a new virus, H5N1/H1N1 carriers on the streets could be coming to you soon!