ˈɛɹ pˌɜːsənˈɛl ɪn ðɪs kɚɹˈɪɹ fˈiːld ɑːɹ pɹaɪmˈɛɹᵻli ɹᵻspˈɑːnsᵻbəl fɚðə ɹᵻpˈɛɹ, kˌælɪbɹˈeɪʃən, ænd mˌɑːdɪfɪkˈeɪʃən ʌv tˈɛst, mˈɛʒɚmənt, ænd dˌaɪəɡnˈɑːstɪk ɪkwˈɪpmənt tˌiːˌɛmdˌiːˈiː, ɪŋklˈuːdɪŋ pɹɪsˈɪʒən mˈɛʒɚmənt ɪkwˈɪpmənt lˈæbɹətˌɔːɹi stˈændɚdz ænd ˌɔːɾəmˈæɾɪk tˈɛst ɪkwˈɪpmənt.
Air personnel in this career field are primarily responsible for the repair, calibration, and modification of test, measurement, and diagnostic equipment (TMDE), including precision measurement equipment laboratory standards and automatic test equipment.