Do American people put a glottal stop[ʔ] before explosive sounds?

Solution 1:

In a comment, Araucaria wrote:

English speakers use a glottal closure before, or simultaneously with, syllable final plosives (stops). These glottal closures are never released before the beginning of the following plosive, and because they do not count as phonemes, they are usually not regarded as independent consonants as such, but rather a feature of the following stop itself. This is normally called glottal reinforcement. So, in short, in the words that you describe, there would be no glottal stop, or glottal closure at the beginning of the word. It only happens at the end (i.e. in the coda) of a syllable.