Before the introduction of stealth technology bomb bays were mostly used by dedicated bomber aircraft; in fighters and attack airplanes bombs and rockets were hung from the wings or fuselage on pylons.
bᵻfˌoːɹ ðɪ ˌɪntɹədˈʌkʃən ʌv stˈɛlθ tɛknˈɑːlədʒi bˈɑːm bˈeɪz wɜː mˈoʊstli jˈuːzd baɪ dˈɛdᵻkˌeɪɾᵻd bˈɑːmɚɹ ˈɛɹkɹæft; ɪn fˈaɪɾɚz ænd ɐtˈæk ˈɛɹpleɪnz bˈɑːmz ænd ɹˈɑːkɪts wɜː hˈʌŋ fɹʌmðə wˈɪŋz ɔːɹ fjˈuːzəlˌɑːʒ ˌɔn pˈaɪlɑːnz.