TNF and susceptibility to pneumonia measurement: IT administration of 106 CFU MDR‐PA induced nonlethal but a robust pneumonia‐induced acute lung injury over 24 h, characterized by an influx of white blood cells, neutrophils, high levels of TNF‐α and MIP‐2, increased lung protein permeability, and development of bacterial load in BALF (Figures S6 and S7).