ðɪs ɪz wˌɛɹ ðə dᵻfˈɛns kˈɔːlz "blˈɪts" ɪn ɐ lˈaʊd vˈɔɪs bᵻfˌoːɹ ðɪ əfˈɛns hˈaɪks ðə bˈɔːl, sˈɪɡnᵻfˌaɪɪŋ ðæt ðeɪ wɪl ɹˈʌʃ, bˌʌt ðɛɹ ɪz ˈɔːlsoʊ ɐ kˈaʊntɚɹ ɪfˈɛkt wɪð ðˈɪs.
This is where the defense calls "Blitz" in a loud voice before the offense hikes the ball, signifying that they will rush, but there is also a counter effect with this.