This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Levels. The original can be viewed here: HC-1B in flight being tested and evaluated original.jpg: . Modifications made by Hohum.

This file is a work of a U.S. Army soldier or employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States. العربية ∙ বাংলা ∙ català ∙ čeština ∙ Deutsch ∙ English ∙ español ∙ eesti ∙ فارسی ∙ suomi ∙ français ∙ hrvatski ∙ magyar ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ 한국어 ∙ lietuvių ∙ македонски ∙ മലയാളം ∙ မြန်မာဘာသာ ∙ Nederlands ∙ polski ∙ português ∙ русский ∙ sicilianu ∙ српски / srpski ∙ svenska ∙ Türkçe ∙ українська ∙ Tiếng Việt ∙ 中文 ∙ 中文（简体） ∙ 中文（繁體） ∙ 中文（臺灣） ∙

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• 2008-11-13T22:09:14 Signaleer 1,000×737 (56,139 bytes) ({{Information |Description=HC-1B in flight during testing and evaluation. |Source=http://www.history.army.mil/books/Vietnam/Airmobility/p269.jpg |Date=N/A c. late 1950s |Author=N/A |Permission=Public Domain, U.S. Army Photograph |other_versions=N/A }})