Quest Engineering Development (QED) founded in 1980, is an engineering consulting firm whose services include mechanical, civil, electrical, environmental, metallurgical, chemical, ergonomic, and architectural investigation for prototyping, failure, and accident investigation.

QED specializes in forensic engineering - with extensive services to government agencies, manufacturers, and owner/operators.  Forensic Engineering can be described as a science that deals with the relationship and application of engineering/scientific facts to reconstruct the sequence of events of a unintended or planned failure of an engineered product.  Forensic Engineering is an effective engineering/ scientific means to improve product performance, safety, and cost.