Yоu аre оn scene with а 39 yeаr оld male c/o respiratory distress. Your patient is tripoding, difficulty talking between breaths, lethargic, accessory-muscle usage noted, pale, cool and clammy. Your patient has a patent airway, breathing 28/min rapid and very shallow, lung sounds auscultated with wheezes upon exhalation bilaterally, and a weak but rapid radial pulse. Vitals: 89% SPO2 RA, 22 ETCO2, 130 HR, and 100/63 BP. Your partner has applied a NRB on the patient at 15 LPM. Family members on scene advises that your patient has a history of asthma, diabetes, and a heart murmur. Which of the following would be considered the most appropriate next step and treatment for this patient?