# Effects of heat and light, n.e.c. at USDA Forest Service - Lassen National Forest
> OSHA SIR `2015096627` · 9/10/2015 · SUSANVILLE, CALIFORNIA
## Severity
- **1 hospitalization**
- **Body part:** BODY SYSTEMS
- **Nature of injury:** Effects of heat and light, n.e.c.
## Cause
- **Event:** Exposure to environmental heat
- **Source:** Heat-environmental
## Employer
- **Name:** USDA Forest Service - Lassen National Forest
- **Location:** Highway 44, SUSANVILLE, CALIFORNIA, 96130
- **NAICS:** 924120
- **Jurisdiction:** 0
## Narrative

On Sunday, September 6, 2015, a forestry technician (hot shot) had physical training.  After the training, the hot shot felt more tired than usual for a few days.  On September 9, 2015, the hot shot had his left knee examined for a previous injury.  During the exam, the physician noticed swelling in the arms and recommended blood work. The blood work indicated a muscle injury due to physical training in hot conditions and the hot shot was admitted to the hospital for treatment in the morning on September 10, 2015.

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*Source: [OSHA Severe Injury Reports](https://www.osha.gov/severe-injury-reports) · MORVS · CC0 1.0*