1. INTRODUCTION

2. SAMPLE AND OBSERVATIONS
2.1. The GOALS Sample
2.2. Herschel/PACS Observations
2.3. Herschel/SPIRE Observations
2.4. Spitzer/IRS Observations

3. HERSCHEL/PACS DATA REDUCTION AND ANALYSIS
3.1. Data Processing
3.2. Data Analysis

4. RESULTS
4.1. The Contribution of AGN
4.2. FIR Line Deficits

5. DISCUSSION
5.1. [C II] 158 Emission from Ionized Gas and PDRs
5.2. FIR Oxygen Line Emission
5.3. PDR Modeling
5.4. Probing the ISM Structure Using G/nH: A Characteristic Break in ΣIR
5.5. Physical Interpretation: Young, Compact, Dusty Star-Forming Regions

6. CONCLUSIONS