A Trial to Determine How Long Insulin and FDKP (the Molecule That Forms Technosphere Particles) Stays in the Lungs of Healthy Individuals After Inhalation of Technosphere® Insulin (TI) Powder Using Bronchoalveolar Lavage (BAL)

1 60-U dose of TI Inhalation Powder before the bronchoscopy. Cohort 1 will undergo bronchoscopies at 30 minutes and again at 6 hours after the 60-U dose inhalation of TI Inhalation Powder. Cohort 2 bronchoscopies will occur at 4 hours and again at 8 hours after TI Inhalation Powder. The need to run and the timepoints for bronchoscopies for Cohort 3 will be determined based on the results from Cohort 1 and 2. All subjects will undergo 2 bronchoscopies at Visit 2.