| **Subsidiaries**                                                    | **State                of Incorporation/Formation** |
|---------------------------------------------------------------------|-----------------------------------------------------|
|                                                                |                                                |
| Macquarie                Infrastructure Company Inc.           | Delaware                                            |
| (d/b/a                Macquarie Infrastructure Company (US))        |                                                |
| Macquarie                Yorkshire LLC                         | Delaware                                            |
| Communications                Infrastructure LLC               | Delaware                                            |
| South                East Water LLC                                 | Delaware                                            |
| Macquarie                FBO Holdings LLC                      | Delaware                                            |
| MIC                European Financing Sarl                     | Luxembourg                                          |
| Macquarie                District Energy Holdings LLC (US)     | Delaware                                            |
| Macquarie                Americas Parking Corporation (US)     | Delaware                                            |
| Atlantic                Aviation FBO, Inc.                          | Delaware                                            |
| Eagle                Aviation Resources, Ltd.                       | Nevada                                              |
| Macquarie                Gas Holdings LLC                           | Delaware                                            |
| Macquarie                Terminal Holdings LLC                      | Delaware                                            |
| Futura                Natural Gas LLC                               | Delaware                                            |
| Macquarie                District Energy Inc.                  | Delaware                                            |
| Macquarie                Airports North America Inc. (US)      | Delaware                                            |
| Macquarie                Aviation North America Inc.           | Delaware                                            |
| Macquarie                Aviation North America 2 Inc.              | Delaware                                            |
| Trajen                Holdings, Inc.                                | Delaware                                            |
| Parking                Company of America Airports Holdings, LLC    | Delaware                                            |
| PCAA                Parent, LLC                                     | Delaware                                            |
| RCL                Properties, LLC                                  | Pennsylvania                                        |
| PCAA                Properties, LLC                                 | Delaware                                            |
| PCAA                Oakland, LLC (f/k/a PCAA Chicago Holdings, LLC) | Delaware                                            |
| Parking                Company of America Airports, LLC             | Delaware                                            |
| PCAA                GP, LLC                                         | Delaware                                            |
| PCAA                LP, LLC                                         | Delaware                                            |
| PCA                Airports, Ltd.                                   | Texas                                               |
| Parking                Company of America Airports Phoenix, LLC     | Delaware                                            |
| PCAA                Chicago, LLC                                    | Delaware                                            |
| Airport                Parking Management Inc.                      | Delaware                                            |
| PCAA                Missouri, LLC                                   | Delaware                                            |
| PCAA                SP, LLC                                         | Delaware                                            |
| PCAA                SP-OK, LLC                                      | Delaware                                            |
| Seacoast                Holdings (PCAAH), Inc.                      | Delaware                                            |
| Macquarie                HGC Investment LLC                         | Hawaii                                              |
| HGC                Investment Corporation                           | Delaware                                            |
| HGC                Holdings LLC                                     | Hawaii                                              |
| The                Gas Company LLC                                  | Hawaii                                              |
| Connect                M1 A1 Holdings Limited (UK)                  |                                                |
| Connect                M1 A1 Limited (UK)                           | United                Kingdom                       |
| Thermal                Chicago Corporation                          | Delaware                                            |
| MDE                Thermal Technologies Inc.                        | Illinois                                            |
| Northwind                Chicago LLC                                | Delaware                                            |
| ETT                National Power, Inc.                             | Illinois                                            |
| Northwind                Midway LLC                                 | Delaware                                            |
| ETT                Nevada, Inc.                                     | Nevada                                              |
| Northwind                Aladdin LLC                                | Nevada                                              |
| ILG                Avcenter, Inc.                                   | Delaware                                            |
| BTV                Avcenter, Inc.                                   | Delaware                                            |
| Atlantic                Aviation Holding Corporation                | Delaware                                            |
| Atlantic                Aviation Corporation                        | Delaware                                            |
| Atlantic                Aviation Flight Support, Inc.               | Delaware                                            |
| Bridgeport                Airport Services, Inc                     | Connecticut                                         |
| Atlantic                Aviation Philadelphia, Inc.                 | Delaware                                            |
| COAI                Holdings, LLC                                   | Delaware                                            |
| Charter                Oak Aviation, Inc.                           | Connecticut                                         |
| BASI                Holdings, LLC                                   | Delaware                                            |

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| **Subsidiaries**                                            | **State                of Incorporation/Formation** |
|-------------------------------------------------------------|-----------------------------------------------------|
|                                                        |                                                |
| Brainard                Airport Services, Inc               | Connecticut                                         |
| AAC                Subsidiary, LLC                          | Delaware                                            |
| Executive                Air Support, Inc                   | Delaware                                            |
| Flightways                of Long Island Inc.               | New                York                             |
|                     (d/b/a Million Air) |                                                |
| FLI                Subsidiary, LLC                          | Delaware                                            |
| General                Aviation, LLC                        | Louisiana                                           |
| General                Aviation of New Orleans, LLC         | Louisiana                                           |
| General                Aviation Holdings LLC                | Delaware                                            |
| Newport                FBO Two, LLC                         | Delaware                                            |
| Palm                Springs FBO Two, LLC                    | Delaware                                            |
| Trajen                Funding, Inc.                         | Delaware                                            |
| Trajen                Limited, LLC                          | Delaware                                            |
| Trajen                FBO, LLC                              | Delaware                                            |
| Trajen                Flight Support, LP                    | Delaware                                            |
| Waukesha                Flying Services, Inc.               | Wisconsin                                           |
| Sierra                Aviation, Inc.                        | Oklahoma                                            |
| Atlantic                SMO Holdings LLC                    | Delaware                                            |
| Atlantic                SMO GP LLC                          | Delaware                                            |
| ProAir                Aviation Maintenance, LLC             | Delaware                                            |

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